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Test that invalidated logical slots doesn't retain WAL. 

Author: Bertrand Drouvot
Reviewed-by: Shi yu, Amit Kapila, Vignesh C
Discussion: https://postgr.es/m/2fefa454-5a70-2174-ddbf-4a0e41537139@gmail.com
This commit is contained in:
Amit Kapila 2023-05-04 08:33:56 +05:30
parent 1ab763fc22
commit a6e04b1d20
1 changed files with 36 additions and 2 deletions
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38
src/test/recovery/t/035_standby_logical_decoding.pl
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@ -500,9 +500,43 @@ $node_standby->restart;
check_slots_conflicting_status(1);
##################################################
# Verify that invalidated logical slots do not lead to retaining WAL
# Verify that invalidated logical slots do not lead to retaining WAL.
##################################################
# XXXXX TODO
# Wait for the cascading standby to catchup before removing the WAL file(s)
$node_standby->wait_for_replay_catchup($node_cascading_standby, $node_primary);
# Get the restart_lsn from an invalidated slot
my $restart_lsn = $node_standby->safe_psql('postgres',
"SELECT restart_lsn from pg_replication_slots WHERE slot_name = 'vacuum_full_activeslot' and conflicting is true;"
);
chomp($restart_lsn);
# As pg_walfile_name() can not be executed on the standby,
# get the WAL file name associated to this lsn from the primary
my $walfile_name = $node_primary->safe_psql('postgres',
"SELECT pg_walfile_name('$restart_lsn')");
chomp($walfile_name);
# Generate some activity and switch WAL file on the primary
$node_primary->safe_psql(
'postgres', "create table retain_test(a int);
select pg_switch_wal();
insert into retain_test values(1);
checkpoint;");
# Wait for the standby to catch up
$node_primary->wait_for_replay_catchup($node_standby);
# Request a checkpoint on the standby to trigger the WAL file(s) removal
$node_standby->safe_psql('postgres', 'checkpoint;');
# Verify that the WAL file has not been retained on the standby
my $standby_walfile = $node_standby->data_dir . '/pg_wal/' . $walfile_name;
ok(!-f "$standby_walfile",
"invalidated logical slots do not lead to retaining WAL");
##################################################
# Recovery conflict: Invalidate conflicting slots, including in-use slots