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Make new replication slot test code less racy

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The new test code added in ead9e51e8236 is racy -- it hinges on
shared-memory state, which changes before the WARNING message is logged.
Put it the other way around.

Backpatch to 13.

Author: Álvaro Herrera <alvherre@alvh.no-ip.org>
Discussion: https://postgr.es/m/202107161809.zclasccpfcg3@alvherre.pgsql
This commit is contained in:
Alvaro Herrera 2021-07-17 13:19:17 -04:00
parent 4466b38ec6
commit d8f3b021c6
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GPG Key ID: 1C20ACB9D5C564AE
1 changed files with 15 additions and 12 deletions
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27
src/test/recovery/t/019_replslot_limit.pl
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@ -177,18 +177,21 @@ ok( !find_in_log(
my $logstart = get_log_size($node_primary);
advance_wal($node_primary, 7);
# This slot should be broken, wait for that to happen
$node_primary->poll_query_until(
'postgres',
qq[SELECT wal_status = 'lost' FROM pg_replication_slots
WHERE slot_name = 'rep1']);
# WARNING should be issued
ok( find_in_log(
$node_primary,
"invalidating slot \"rep1\" because its restart_lsn [0-9A-F/]+ exceeds max_slot_wal_keep_size",
$logstart),
'check that the warning is logged');
# wait until the WARNING is issued
my $invalidated = 0;
for (my $i = 0; $i < 10000; $i++)
{
if (find_in_log(
$node_primary,
"invalidating slot \"rep1\" because its restart_lsn [0-9A-F/]+ exceeds max_slot_wal_keep_size",
$logstart))
{
$invalidated = 1;
last;
}
usleep(100_000);
}
ok($invalidated, 'check that slot invalidation has been logged');
$result = $node_primary->safe_psql(
'postgres',