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Stabilize test_decoding touching with sequences

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Some of the test_decoding regression tests are unstable due to modifying
a sequence. The first increment of a sequence after a checkpoint is
always logged (and thus decoded), which makes the output unpredictable.
The runs are usually much shorter than a checkpoint internal, so these
failures are rare, but we've seen a couple of them on animals that are
either slow or are running with valgrind/clobber cache/...

Fixed by skipping sequence decoding in most tests, with the exception of
the test aimed at testing decoding of sequences.

Reported-by: Amita Kapila
Discussion: https://postgr.es/m/d045f3c2-6cfb-06d3-5540-e63c320df8bc@enterprisedb.com
This commit is contained in:
Tomas Vondra
2022-03-08 18:54:37 +01:00
parent 54c72eb5e5
commit a180c2b34d
10 changed files with 44 additions and 44 deletions
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2
contrib/test_decoding/expected/rewrite.out
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@ -115,7 +115,7 @@ INSERT INTO replication_example(somedata, testcolumn1, testcolumn3) VALUES (7, 5
COMMIT;
-- make old files go away
CHECKPOINT;
SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1', 'include-sequences', '0');
data
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
BEGIN