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https://github.com/postgres/postgres.git
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Additional tests for subtransactions in recovery
Tests for normal and prepared transactions Author: Nikhil Sontakke, placed in new test file by me
This commit is contained in:
Simon Riggs
@@ -4,7 +4,7 @@ use warnings;
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use PostgresNode;
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use TestLib;
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use Test::More tests => 13;
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use Test::More tests => 12;
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# Setup master node
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my $node_master = get_new_node("master");
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@@ -283,40 +283,3 @@ $node_master->psql('postgres', "
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$node_slave->psql('postgres', "SELECT count(*) FROM pg_prepared_xacts",
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stdout => \$psql_out);
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is($psql_out, '0', "Replay prepared transaction with DDL");
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###############################################################################
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# Check that replay will correctly set SUBTRANS and properly advance nextXid
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# so that it won't conflict with savepoint xids.
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###############################################################################
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$node_master->psql('postgres', "
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BEGIN;
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DELETE FROM t_009_tbl;
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INSERT INTO t_009_tbl VALUES (43);
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SAVEPOINT s1;
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INSERT INTO t_009_tbl VALUES (43);
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SAVEPOINT s2;
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INSERT INTO t_009_tbl VALUES (43);
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SAVEPOINT s3;
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INSERT INTO t_009_tbl VALUES (43);
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SAVEPOINT s4;
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INSERT INTO t_009_tbl VALUES (43);
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SAVEPOINT s5;
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INSERT INTO t_009_tbl VALUES (43);
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PREPARE TRANSACTION 'xact_009_1';
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CHECKPOINT;");
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$node_master->stop;
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$node_master->start;
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$node_master->psql('postgres', "
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-- here we can get xid of previous savepoint if nextXid
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-- wasn't properly advanced
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BEGIN;
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INSERT INTO t_009_tbl VALUES (142);
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ROLLBACK;
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COMMIT PREPARED 'xact_009_1';");
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$node_master->psql('postgres', "SELECT count(*) FROM t_009_tbl",
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stdout => \$psql_out);
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is($psql_out, '6', "Check nextXid handling for prepared subtransactions");
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197
src/test/recovery/t/012_subtransactions.pl
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197
src/test/recovery/t/012_subtransactions.pl
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@@ -0,0 +1,197 @@
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# Tests dedicated to subtransactions in recovery
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use strict;
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use warnings;
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use PostgresNode;
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use TestLib;
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use Test::More tests => 12;
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# Setup master node
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my $node_master = get_new_node("master");
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$node_master->init(allows_streaming => 1);
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$node_master->append_conf('postgresql.conf', qq(
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max_prepared_transactions = 10
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log_checkpoints = true
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));
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$node_master->start;
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$node_master->backup('master_backup');
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$node_master->psql('postgres', "CREATE TABLE t_012_tbl (id int)");
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# Setup slave node
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my $node_slave = get_new_node('slave');
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$node_slave->init_from_backup($node_master, 'master_backup', has_streaming => 1);
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$node_slave->start;
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# Switch to synchronous replication
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$node_master->append_conf('postgresql.conf', qq(
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synchronous_standby_names = '*'
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));
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$node_master->psql('postgres', "SELECT pg_reload_conf()");
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my $psql_out = '';
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my $psql_rc = '';
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###############################################################################
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# Check that replay will correctly set SUBTRANS and properly advance nextXid
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# so that it won't conflict with savepoint xids.
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###############################################################################
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$node_master->psql('postgres', "
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BEGIN;
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DELETE FROM t_012_tbl;
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INSERT INTO t_012_tbl VALUES (43);
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SAVEPOINT s1;
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INSERT INTO t_012_tbl VALUES (43);
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SAVEPOINT s2;
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INSERT INTO t_012_tbl VALUES (43);
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SAVEPOINT s3;
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INSERT INTO t_012_tbl VALUES (43);
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SAVEPOINT s4;
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INSERT INTO t_012_tbl VALUES (43);
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SAVEPOINT s5;
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INSERT INTO t_012_tbl VALUES (43);
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PREPARE TRANSACTION 'xact_012_1';
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CHECKPOINT;");
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$node_master->stop;
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$node_master->start;
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$node_master->psql('postgres', "
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-- here we can get xid of previous savepoint if nextXid
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-- wasn't properly advanced
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BEGIN;
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INSERT INTO t_012_tbl VALUES (142);
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ROLLBACK;
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COMMIT PREPARED 'xact_012_1';");
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$node_master->psql('postgres', "SELECT count(*) FROM t_012_tbl",
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stdout => \$psql_out);
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is($psql_out, '6', "Check nextXid handling for prepared subtransactions");
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###############################################################################
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# Check that replay will correctly set 2PC with more than
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# PGPROC_MAX_CACHED_SUBXIDS subtransations and also show data properly
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# on promotion
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###############################################################################
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$node_master->psql('postgres', "DELETE FROM t_012_tbl");
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# Function borrowed from src/test/regress/sql/hs_primary_extremes.sql
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$node_master->psql('postgres', "
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CREATE OR REPLACE FUNCTION hs_subxids (n integer)
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RETURNS void
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LANGUAGE plpgsql
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AS \$\$
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BEGIN
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IF n <= 0 THEN RETURN; END IF;
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INSERT INTO t_012_tbl VALUES (n);
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PERFORM hs_subxids(n - 1);
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RETURN;
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EXCEPTION WHEN raise_exception THEN NULL; END;
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\$\$;");
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$node_master->psql('postgres', "
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BEGIN;
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SELECT hs_subxids(127);
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COMMIT;");
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$node_master->wait_for_catchup($node_slave, 'replay', $node_master->lsn('insert'));
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$node_slave->psql('postgres', "SELECT coalesce(sum(id),-1) FROM t_012_tbl",
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stdout => \$psql_out);
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is($psql_out, '8128', "Visible");
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$node_master->stop;
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$node_slave->promote;
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$node_slave->poll_query_until('postgres',
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"SELECT NOT pg_is_in_recovery()")
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or die "Timed out while waiting for promotion of standby";
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$node_slave->psql('postgres', "SELECT coalesce(sum(id),-1) FROM t_012_tbl",
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stdout => \$psql_out);
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is($psql_out, '8128', "Visible");
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# restore state
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($node_master, $node_slave) = ($node_slave, $node_master);
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$node_slave->enable_streaming($node_master);
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$node_slave->append_conf('recovery.conf', qq(
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recovery_target_timeline='latest'
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));
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$node_slave->start;
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$node_slave->psql('postgres', "SELECT coalesce(sum(id),-1) FROM t_012_tbl",
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stdout => \$psql_out);
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is($psql_out, '8128', "Visible");
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$node_master->psql('postgres', "DELETE FROM t_012_tbl");
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# Function borrowed from src/test/regress/sql/hs_primary_extremes.sql
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$node_master->psql('postgres', "
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CREATE OR REPLACE FUNCTION hs_subxids (n integer)
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RETURNS void
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LANGUAGE plpgsql
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AS \$\$
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BEGIN
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IF n <= 0 THEN RETURN; END IF;
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INSERT INTO t_012_tbl VALUES (n);
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PERFORM hs_subxids(n - 1);
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RETURN;
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EXCEPTION WHEN raise_exception THEN NULL; END;
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\$\$;");
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$node_master->psql('postgres', "
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BEGIN;
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SELECT hs_subxids(127);
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PREPARE TRANSACTION 'xact_012_1';");
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$node_master->wait_for_catchup($node_slave, 'replay', $node_master->lsn('insert'));
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$node_slave->psql('postgres', "SELECT coalesce(sum(id),-1) FROM t_012_tbl",
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stdout => \$psql_out);
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is($psql_out, '-1', "Not visible");
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$node_master->stop;
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$node_slave->promote;
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$node_slave->poll_query_until('postgres',
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"SELECT NOT pg_is_in_recovery()")
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or die "Timed out while waiting for promotion of standby";
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$node_slave->psql('postgres', "SELECT coalesce(sum(id),-1) FROM t_012_tbl",
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stdout => \$psql_out);
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is($psql_out, '-1', "Not visible");
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# restore state
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($node_master, $node_slave) = ($node_slave, $node_master);
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$node_slave->enable_streaming($node_master);
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$node_slave->append_conf('recovery.conf', qq(
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recovery_target_timeline='latest'
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));
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$node_slave->start;
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$psql_rc = $node_master->psql('postgres', "COMMIT PREPARED 'xact_012_1'");
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is($psql_rc, '0', "Restore of PGPROC_MAX_CACHED_SUBXIDS+ prepared transaction on promoted slave");
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$node_master->psql('postgres', "SELECT coalesce(sum(id),-1) FROM t_012_tbl",
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stdout => \$psql_out);
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is($psql_out, '8128', "Visible");
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$node_master->psql('postgres', "DELETE FROM t_012_tbl");
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$node_master->psql('postgres', "
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BEGIN;
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SELECT hs_subxids(201);
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PREPARE TRANSACTION 'xact_012_1';");
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$node_master->wait_for_catchup($node_slave, 'replay', $node_master->lsn('insert'));
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$node_slave->psql('postgres', "SELECT coalesce(sum(id),-1) FROM t_012_tbl",
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stdout => \$psql_out);
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is($psql_out, '-1', "Not visible");
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$node_master->stop;
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$node_slave->promote;
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$node_slave->poll_query_until('postgres',
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"SELECT NOT pg_is_in_recovery()")
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or die "Timed out while waiting for promotion of standby";
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$node_slave->psql('postgres', "SELECT coalesce(sum(id),-1) FROM t_012_tbl",
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stdout => \$psql_out);
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is($psql_out, '-1', "Not visible");
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# restore state
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($node_master, $node_slave) = ($node_slave, $node_master);
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$node_slave->enable_streaming($node_master);
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$node_slave->append_conf('recovery.conf', qq(
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recovery_target_timeline='latest'
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));
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$node_slave->start;
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$psql_rc = $node_master->psql('postgres', "ROLLBACK PREPARED 'xact_012_1'");
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is($psql_rc, '0', "Rollback of PGPROC_MAX_CACHED_SUBXIDS+ prepared transaction on promoted slave");
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$node_master->psql('postgres', "SELECT coalesce(sum(id),-1) FROM t_012_tbl",
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stdout => \$psql_out);
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is($psql_out, '-1', "Not visible");
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