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[PATCH 01/11] Don't use EV_CLEAR for kqueue events.
350+ 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; 350+ 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] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


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



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

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

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

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46 Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 350+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+my $node;
+
+#
+# Test set-up
+#
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 350+ messages in thread

* [PATCH 2/6] Refactor index_concurrently_create_copy() for use with REPACK (CONCURRENTLY).
@ 2026-01-12 16:30 Antonin Houska <ah@cybertec.at>
  0 siblings, 0 replies; 350+ messages in thread

From: Antonin Houska @ 2026-01-12 16:30 UTC (permalink / raw)

This patch moves the code to index_create_copy() and adds a "concurrently"
parameter so it can be used by REPACK (CONCURRENTLY).

With the CONCURRENTLY option, REPACK cannot simply swap the heap file and
rebuild its indexes. Instead, it needs to build a separate set of indexes
(including system catalog entries) *before* the actual swap, to reduce the
time AccessExclusiveLock needs to be held for.
---
 src/backend/catalog/index.c      | 54 +++++++++++++++++++++++---------
 src/backend/commands/indexcmds.c |  6 ++--
 src/backend/nodes/makefuncs.c    |  9 +++---
 src/include/catalog/index.h      |  3 ++
 src/include/nodes/makefuncs.h    |  4 ++-
 5 files changed, 54 insertions(+), 22 deletions(-)

diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 5ee6389d39c..f8e6c3d804e 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -1288,15 +1288,32 @@ index_create(Relation heapRelation,
 /*
  * index_concurrently_create_copy
  *
- * Create concurrently an index based on the definition of the one provided by
- * caller.  The index is inserted into catalogs and needs to be built later
- * on.  This is called during concurrent reindex processing.
- *
- * "tablespaceOid" is the tablespace to use for this index.
+ * Variant of index_create_copy(), called during concurrent reindex
+ * processing.
  */
 Oid
 index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId,
 							   Oid tablespaceOid, const char *newName)
+{
+	return index_create_copy(heapRelation, oldIndexId, tablespaceOid, newName,
+							 true);
+}
+
+/*
+ * index_create_copy
+ *
+ * Create an index based on the definition of the one provided by caller.  The
+ * index is inserted into catalogs. If 'concurrently' is TRUE, it needs to be
+ * built later on, otherwise it's built immediately.
+ *
+ * "tablespaceOid" is the tablespace to use for this index.
+ *
+ * The actual implementation of index_concurrently_create_copy(), reusable for
+ * other purposes.
+ */
+Oid
+index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
+				  const char *newName, bool concurrently)
 {
 	Relation	indexRelation;
 	IndexInfo  *oldInfo,
@@ -1315,6 +1332,7 @@ index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId,
 	List	   *indexColNames = NIL;
 	List	   *indexExprs = NIL;
 	List	   *indexPreds = NIL;
+	int			flags = 0;
 
 	indexRelation = index_open(oldIndexId, RowExclusiveLock);
 
@@ -1325,7 +1343,7 @@ index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId,
 	 * Concurrent build of an index with exclusion constraints is not
 	 * supported.
 	 */
-	if (oldInfo->ii_ExclusionOps != NULL)
+	if (oldInfo->ii_ExclusionOps != NULL && concurrently)
 		ereport(ERROR,
 				(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
 				 errmsg("concurrent index creation for exclusion constraints is not supported")));
@@ -1381,9 +1399,7 @@ index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId,
 	}
 
 	/*
-	 * Build the index information for the new index.  Note that rebuild of
-	 * indexes with exclusion constraints is not supported, hence there is no
-	 * need to fill all the ii_Exclusion* fields.
+	 * Build the index information for the new index.
 	 */
 	newInfo = makeIndexInfo(oldInfo->ii_NumIndexAttrs,
 							oldInfo->ii_NumIndexKeyAttrs,
@@ -1392,10 +1408,13 @@ index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId,
 							indexPreds,
 							oldInfo->ii_Unique,
 							oldInfo->ii_NullsNotDistinct,
-							false,	/* not ready for inserts */
-							true,
+							!concurrently,	/* isready */
+							concurrently,	/* concurrent */
 							indexRelation->rd_indam->amsummarizing,
-							oldInfo->ii_WithoutOverlaps);
+							oldInfo->ii_WithoutOverlaps,
+							oldInfo->ii_ExclusionOps,
+							oldInfo->ii_ExclusionProcs,
+							oldInfo->ii_ExclusionStrats);
 
 	/*
 	 * Extract the list of column names and the column numbers for the new
@@ -1433,6 +1452,9 @@ index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId,
 		stattargets[i].isnull = isnull;
 	}
 
+	if (concurrently)
+		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
+
 	/*
 	 * Now create the new index.
 	 *
@@ -1456,7 +1478,7 @@ index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId,
 							  indcoloptions->values,
 							  stattargets,
 							  reloptionsDatum,
-							  INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT,
+							  flags,
 							  0,
 							  true, /* allow table to be a system catalog? */
 							  false,	/* is_internal? */
@@ -2450,7 +2472,8 @@ BuildIndexInfo(Relation index)
 					   indexStruct->indisready,
 					   false,
 					   index->rd_indam->amsummarizing,
-					   indexStruct->indisexclusion && indexStruct->indisunique);
+					   indexStruct->indisexclusion && indexStruct->indisunique,
+					   NULL, NULL, NULL);
 
 	/* fill in attribute numbers */
 	for (i = 0; i < numAtts; i++)
@@ -2510,7 +2533,8 @@ BuildDummyIndexInfo(Relation index)
 					   indexStruct->indisready,
 					   false,
 					   index->rd_indam->amsummarizing,
-					   indexStruct->indisexclusion && indexStruct->indisunique);
+					   indexStruct->indisexclusion && indexStruct->indisunique,
+					   NULL, NULL, NULL);
 
 	/* fill in attribute numbers */
 	for (i = 0; i < numAtts; i++)
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 635679cc1f2..34209bd1393 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -243,7 +243,8 @@ CheckIndexCompatible(Oid oldId,
 	 */
 	indexInfo = makeIndexInfo(numberOfAttributes, numberOfAttributes,
 							  accessMethodId, NIL, NIL, false, false,
-							  false, false, amsummarizing, isWithoutOverlaps);
+							  false, false, amsummarizing, isWithoutOverlaps,
+							  NULL, NULL, NULL);
 	typeIds = palloc_array(Oid, numberOfAttributes);
 	collationIds = palloc_array(Oid, numberOfAttributes);
 	opclassIds = palloc_array(Oid, numberOfAttributes);
@@ -930,7 +931,8 @@ DefineIndex(ParseState *pstate,
 							  !concurrent,
 							  concurrent,
 							  amissummarizing,
-							  stmt->iswithoutoverlaps);
+							  stmt->iswithoutoverlaps,
+							  NULL, NULL, NULL);
 
 	typeIds = palloc_array(Oid, numberOfAttributes);
 	collationIds = palloc_array(Oid, numberOfAttributes);
diff --git a/src/backend/nodes/makefuncs.c b/src/backend/nodes/makefuncs.c
index 2caec621d73..ca7e21e8349 100644
--- a/src/backend/nodes/makefuncs.c
+++ b/src/backend/nodes/makefuncs.c
@@ -834,7 +834,8 @@ IndexInfo *
 makeIndexInfo(int numattrs, int numkeyattrs, Oid amoid, List *expressions,
 			  List *predicates, bool unique, bool nulls_not_distinct,
 			  bool isready, bool concurrent, bool summarizing,
-			  bool withoutoverlaps)
+			  bool withoutoverlaps, Oid *exclusion_ops, Oid *exclusion_procs,
+			  uint16 *exclusion_strats)
 {
 	IndexInfo  *n = makeNode(IndexInfo);
 
@@ -863,9 +864,9 @@ makeIndexInfo(int numattrs, int numkeyattrs, Oid amoid, List *expressions,
 	n->ii_PredicateState = NULL;
 
 	/* exclusion constraints */
-	n->ii_ExclusionOps = NULL;
-	n->ii_ExclusionProcs = NULL;
-	n->ii_ExclusionStrats = NULL;
+	n->ii_ExclusionOps = exclusion_ops;
+	n->ii_ExclusionProcs = exclusion_procs;
+	n->ii_ExclusionStrats = exclusion_strats;
 
 	/* speculative inserts */
 	n->ii_UniqueOps = NULL;
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index b259c4141ed..3426087b445 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -99,6 +99,9 @@ extern Oid	index_concurrently_create_copy(Relation heapRelation,
 										   Oid oldIndexId,
 										   Oid tablespaceOid,
 										   const char *newName);
+extern Oid	index_create_copy(Relation heapRelation, Oid oldIndexId,
+							  Oid tablespaceOid, const char *newName,
+							  bool concurrently);
 
 extern void index_concurrently_build(Oid heapRelationId,
 									 Oid indexRelationId);
diff --git a/src/include/nodes/makefuncs.h b/src/include/nodes/makefuncs.h
index 982ec25ae14..dcea148ae1a 100644
--- a/src/include/nodes/makefuncs.h
+++ b/src/include/nodes/makefuncs.h
@@ -99,7 +99,9 @@ extern IndexInfo *makeIndexInfo(int numattrs, int numkeyattrs, Oid amoid,
 								List *expressions, List *predicates,
 								bool unique, bool nulls_not_distinct,
 								bool isready, bool concurrent,
-								bool summarizing, bool withoutoverlaps);
+								bool summarizing, bool withoutoverlaps,
+								Oid *exclusion_ops, Oid *exclusion_procs,
+								uint16 *exclusion_strats);
 
 extern Node *makeStringConst(char *str, int location);
 extern DefElem *makeDefElem(char *name, Node *arg, int location);
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v30-0003-Move-conversion-of-a-historic-to-MVCC-snapshot-to-a-.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>
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2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
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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>
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>
2026-01-12 16:30 [PATCH 2/6] Refactor index_concurrently_create_copy() for use with REPACK (CONCURRENTLY). Antonin Houska <ah@cybertec.at>

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