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Add regression test for background worker restart after crash.

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Previously, if a background worker crashed and the server restarted
with restart_after_crash enabled, the worker was not restarted
as expected. This issue was fixed by commit b5d084c535,
which ensures that background workers without the never-restart flag
are correctly restarted after a crash-and-restart cycle.

To guard against regressions, this commit adds a test that verifies
a background worker successfully restarts in such a scenario.

Author: Fujii Masao <masao.fujii@gmail.com>
Reviewed-by: ChangAo Chen <cca5507@qq.com>
Discussion: https://postgr.es/m/CAHGQGwHF-PdUOgiXCH_8K5qBm8b13h0Qt=dSoFXZybXQdbf-tw@mail.gmail.com
This commit is contained in:
Fujii Masao
2025-07-29 19:43:10 +09:00
parent cb833c1b6d
commit cc321b1d1c
1 changed files with 7 additions and 0 deletions
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7
src/test/recovery/t/013_crash_restart.pl
View File

@ -228,6 +228,13 @@ is( $node->safe_psql(
'before-orderly-restart', 'before-orderly-restart',
'can still write after crash restart'); 'can still write after crash restart');
# Confirm that the logical replication launcher, a background worker
# without the never-restart flag, has also restarted successfully.
is($node->poll_query_until('postgres',
"SELECT count(*) = 1 FROM pg_stat_activity WHERE backend_type = 'logical replication launcher'"),
'1',
'logical replication launcher restarted after crash');
# Just to be sure, check that an orderly restart now still works # Just to be sure, check that an orderly restart now still works
$node->restart(); $node->restart();