pgsql: Disable autovacuum in 031_recovery_conflict.pl - Mailing list pgsql-committers

From Fujii Masao
Subject pgsql: Disable autovacuum in 031_recovery_conflict.pl
Date
Msg-id E1xDZxN-00000000MBj-3L4r@gemulon.postgresql.org
Whole thread
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Disable autovacuum in 031_recovery_conflict.pl

Buildfarm members adder and drongo failed to observe the expected relation
lock wait in the startup deadlock test. In adder's failure, autovacuum
pruned dead rows before the test's explicit VACUUM FREEZE, canceling the
standby backend too early and releasing the relation lock wait before the
test could observe it.

Fix this by disabling autovacuum for the test node, leaving the explicit
VACUUM commands in control of when pruning occurs. This also prevents
auto-analyze workers on other relations from holding back xmin and
interfering with the snapshot conflict test.

Backpatch to v17, where this test is enabled.

Reported-by: Alexander Lakhin <exclusion@gmail.com>
Author: Ayush Tiwari <ayushtiwari.slg01@gmail.com>
Reviewed-by: Fujii Masao <masao.fujii@gmail.com>
Discussion: https://postgr.es/m/421c0aee-84c8-4c07-b4b9-263095479755%40gmail.com
Discussion: https://postgr.es/m/714729ea-f536-0faf-353b-cbd5c8f241ea%40gmail.com
Backpatch-through: 17

Branch
------
REL_18_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/628b70d3a3a936afa84dbdc344c02ae990797573

Modified Files
--------------
src/test/recovery/t/031_recovery_conflict.pl | 3 +++
1 file changed, 3 insertions(+)


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