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Fix autovacuum's database sorting.

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When db_comparator() was updated to use pg_cmp_s32(), the arguments
were listed in the wrong order.  This caused autovacuum to sort the
databases by their scores in ascending order instead of descending
order.  To fix, swap the arguments to pg_cmp_s32().

Oversight in commit 3b42bdb471.

Reported-by: Хамидуллин Рустам <r.khamidullin@postgrespro.ru>
Author: Хамидуллин Рустам <r.khamidullin@postgrespro.ru>
Discussion: https://postgr.es/m/5c5a7984-b149-b505-7ad9-2a7766c65b55%40postgrespro.ru
Backpatch-through: 17
This commit is contained in:
Nathan Bossart
2026-07-31 10:34:40 -05:00
parent f70acc8a2b
commit 4cc49cb703
1 changed files with 2 additions and 2 deletions
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4
src/backend/postmaster/autovacuum.c
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@@ -1071,8 +1071,8 @@ rebuild_database_list(Oid newdb)
static int
db_comparator(const void *a, const void *b)
{
return pg_cmp_s32(((const avl_dbase *) a)->adl_score,
((const avl_dbase *) b)->adl_score);
return pg_cmp_s32(((const avl_dbase *) b)->adl_score,
((const avl_dbase *) a)->adl_score);
}
/*