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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
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@ -500,9 +500,43 @@ $node_standby->restart;
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check_slots_conflicting_status(1);
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##################################################
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# Verify that invalidated logical slots do not lead to retaining WAL
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# Verify that invalidated logical slots do not lead to retaining WAL.
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##################################################
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# XXXXX TODO
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# Wait for the cascading standby to catchup before removing the WAL file(s)
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$node_standby->wait_for_replay_catchup($node_cascading_standby, $node_primary);
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# Get the restart_lsn from an invalidated slot
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my $restart_lsn = $node_standby->safe_psql('postgres',
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"SELECT restart_lsn from pg_replication_slots WHERE slot_name = 'vacuum_full_activeslot' and conflicting is true;"
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);
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chomp($restart_lsn);
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# As pg_walfile_name() can not be executed on the standby,
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# get the WAL file name associated to this lsn from the primary
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my $walfile_name = $node_primary->safe_psql('postgres',
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"SELECT pg_walfile_name('$restart_lsn')");
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chomp($walfile_name);
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# Generate some activity and switch WAL file on the primary
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$node_primary->safe_psql(
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'postgres', "create table retain_test(a int);
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select pg_switch_wal();
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insert into retain_test values(1);
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checkpoint;");
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# Wait for the standby to catch up
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$node_primary->wait_for_replay_catchup($node_standby);
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# Request a checkpoint on the standby to trigger the WAL file(s) removal
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$node_standby->safe_psql('postgres', 'checkpoint;');
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# Verify that the WAL file has not been retained on the standby
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my $standby_walfile = $node_standby->data_dir . '/pg_wal/' . $walfile_name;
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ok(!-f "$standby_walfile",
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"invalidated logical slots do not lead to retaining WAL");
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##################################################
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# Recovery conflict: Invalidate conflicting slots, including in-use slots
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