postgresql/contrib/test_decoding/expected/catalog_change_snapshot.out
Amit Kapila 16b1fe0037 Fix assertion failures while processing NEW_CID record in logical decoding.
When the logical decoding restarts from NEW_CID, since there is no
association between the top transaction and its subtransaction, both are
created as top transactions and have the same LSN. This caused the
assertion failure in AssertTXNLsnOrder().

This patch skips the assertion check until we reach the LSN at which we
start decoding the contents of the transaction, specifically
start_decoding_at LSN in SnapBuild. This is okay because we don't
guarantee to make the association between top transaction and
subtransaction until we try to decode the actual contents of transaction.
The ordering of the records prior to the start_decoding_at LSN should have
been checked before the restart.

The other assertion failure is due to the reason that we forgot to track
that we have considered top-level transaction id in the list of catalog
changing transactions that were committed when one of its subtransactions
is marked as containing catalog change.

Reported-by: Tomas Vondra, Osumi Takamichi
Author: Masahiko Sawada, Kuroda Hayato
Reviewed-by: Amit Kapila, Dilip Kumar, Kuroda Hayato, Kyotaro Horiguchi, Masahiko Sawada
Backpatch-through: 10
Discussion: https://postgr.es/m/a89b46b6-0239-2fd5-71a9-b19b1f7a7145%40enterprisedb.com
Discussion: https://postgr.es/m/TYCPR01MB83733C6CEAE47D0280814D5AED7A9%40TYCPR01MB8373.jpnprd01.prod.outlook.com
2022-10-20 08:49:48 +05:30

144 lines
5.4 KiB
Plaintext

Parsed test spec with 3 sessions
starting permutation: s0_init s0_begin s0_savepoint s0_truncate s1_checkpoint s1_get_changes s0_commit s0_begin s0_insert s1_checkpoint s1_get_changes s0_commit s1_get_changes
step s0_init: SELECT 'init' FROM pg_create_logical_replication_slot('isolation_slot', 'test_decoding');
?column?
--------
init
(1 row)
step s0_begin: BEGIN;
step s0_savepoint: SAVEPOINT sp1;
step s0_truncate: TRUNCATE tbl1;
step s1_checkpoint: CHECKPOINT;
step s1_get_changes: SELECT data FROM pg_logical_slot_get_changes('isolation_slot', NULL, NULL, 'skip-empty-xacts', '1', 'include-xids', '0');
data
----
(0 rows)
step s0_commit: COMMIT;
step s0_begin: BEGIN;
step s0_insert: INSERT INTO tbl1 VALUES (1);
step s1_checkpoint: CHECKPOINT;
step s1_get_changes: SELECT data FROM pg_logical_slot_get_changes('isolation_slot', NULL, NULL, 'skip-empty-xacts', '1', 'include-xids', '0');
data
---------------------------------------
BEGIN
table public.tbl1: TRUNCATE: (no-flags)
COMMIT
(3 rows)
step s0_commit: COMMIT;
step s1_get_changes: SELECT data FROM pg_logical_slot_get_changes('isolation_slot', NULL, NULL, 'skip-empty-xacts', '1', 'include-xids', '0');
data
-------------------------------------------------------------
BEGIN
table public.tbl1: INSERT: val1[integer]:1 val2[integer]:null
COMMIT
(3 rows)
?column?
--------
stop
(1 row)
starting permutation: s0_init s0_begin s0_truncate s2_begin s2_truncate s1_checkpoint s1_get_changes s0_commit s0_begin s0_insert s1_checkpoint s1_get_changes s2_commit s1_checkpoint s1_get_changes s0_commit s1_get_changes
step s0_init: SELECT 'init' FROM pg_create_logical_replication_slot('isolation_slot', 'test_decoding');
?column?
--------
init
(1 row)
step s0_begin: BEGIN;
step s0_truncate: TRUNCATE tbl1;
step s2_begin: BEGIN;
step s2_truncate: TRUNCATE tbl2;
step s1_checkpoint: CHECKPOINT;
step s1_get_changes: SELECT data FROM pg_logical_slot_get_changes('isolation_slot', NULL, NULL, 'skip-empty-xacts', '1', 'include-xids', '0');
data
----
(0 rows)
step s0_commit: COMMIT;
step s0_begin: BEGIN;
step s0_insert: INSERT INTO tbl1 VALUES (1);
step s1_checkpoint: CHECKPOINT;
step s1_get_changes: SELECT data FROM pg_logical_slot_get_changes('isolation_slot', NULL, NULL, 'skip-empty-xacts', '1', 'include-xids', '0');
data
---------------------------------------
BEGIN
table public.tbl1: TRUNCATE: (no-flags)
COMMIT
(3 rows)
step s2_commit: COMMIT;
step s1_checkpoint: CHECKPOINT;
step s1_get_changes: SELECT data FROM pg_logical_slot_get_changes('isolation_slot', NULL, NULL, 'skip-empty-xacts', '1', 'include-xids', '0');
data
---------------------------------------
BEGIN
table public.tbl2: TRUNCATE: (no-flags)
COMMIT
(3 rows)
step s0_commit: COMMIT;
step s1_get_changes: SELECT data FROM pg_logical_slot_get_changes('isolation_slot', NULL, NULL, 'skip-empty-xacts', '1', 'include-xids', '0');
data
-------------------------------------------------------------
BEGIN
table public.tbl1: INSERT: val1[integer]:1 val2[integer]:null
COMMIT
(3 rows)
?column?
--------
stop
(1 row)
starting permutation: s0_init s0_begin s0_savepoint s0_insert s1_checkpoint s1_get_changes s0_insert2 s0_commit s0_begin s0_insert s1_checkpoint s1_get_changes s0_commit s1_get_changes
step s0_init: SELECT 'init' FROM pg_create_logical_replication_slot('isolation_slot', 'test_decoding');
?column?
--------
init
(1 row)
step s0_begin: BEGIN;
step s0_savepoint: SAVEPOINT sp1;
step s0_insert: INSERT INTO tbl1 VALUES (1);
step s1_checkpoint: CHECKPOINT;
step s1_get_changes: SELECT data FROM pg_logical_slot_get_changes('isolation_slot', NULL, NULL, 'skip-empty-xacts', '1', 'include-xids', '0');
data
----
(0 rows)
step s0_insert2: INSERT INTO user_cat VALUES (1);
step s0_commit: COMMIT;
step s0_begin: BEGIN;
step s0_insert: INSERT INTO tbl1 VALUES (1);
step s1_checkpoint: CHECKPOINT;
step s1_get_changes: SELECT data FROM pg_logical_slot_get_changes('isolation_slot', NULL, NULL, 'skip-empty-xacts', '1', 'include-xids', '0');
data
-------------------------------------------------------------
BEGIN
table public.tbl1: INSERT: val1[integer]:1 val2[integer]:null
table public.user_cat: INSERT: val1[integer]:1
COMMIT
(4 rows)
step s0_commit: COMMIT;
step s1_get_changes: SELECT data FROM pg_logical_slot_get_changes('isolation_slot', NULL, NULL, 'skip-empty-xacts', '1', 'include-xids', '0');
data
-------------------------------------------------------------
BEGIN
table public.tbl1: INSERT: val1[integer]:1 val2[integer]:null
COMMIT
(3 rows)
?column?
--------
stop
(1 row)