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Postgres FD Implementation
Commit 0352c15e authored by Simon Riggs's avatar Simon Riggs
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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
parent 6c9bd27a
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Showing with 198 additions and 38 deletions
src/test/recovery/t/009_twophase.pl
View file @ 0352c15e
......@@ -4,7 +4,7 @@ use warnings;
use PostgresNode;
use TestLib;
use Test::More tests => 13;
use Test::More tests => 12;
# Setup master node
my $node_master = get_new_node("master");
......@@ -283,40 +283,3 @@ $node_master->psql('postgres', "
$node_slave->psql('postgres', "SELECT count(*) FROM pg_prepared_xacts",
stdout => \$psql_out);
is($psql_out, '0', "Replay prepared transaction with DDL");
###############################################################################
# Check that replay will correctly set SUBTRANS and properly advance nextXid
# so that it won't conflict with savepoint xids.
###############################################################################
$node_master->psql('postgres', "
BEGIN;
DELETE FROM t_009_tbl;
INSERT INTO t_009_tbl VALUES (43);
SAVEPOINT s1;
INSERT INTO t_009_tbl VALUES (43);
SAVEPOINT s2;
INSERT INTO t_009_tbl VALUES (43);
SAVEPOINT s3;
INSERT INTO t_009_tbl VALUES (43);
SAVEPOINT s4;
INSERT INTO t_009_tbl VALUES (43);
SAVEPOINT s5;
INSERT INTO t_009_tbl VALUES (43);
PREPARE TRANSACTION 'xact_009_1';
CHECKPOINT;");
$node_master->stop;
$node_master->start;
$node_master->psql('postgres', "
-- here we can get xid of previous savepoint if nextXid
-- wasn't properly advanced
BEGIN;
INSERT INTO t_009_tbl VALUES (142);
ROLLBACK;
COMMIT PREPARED 'xact_009_1';");
$node_master->psql('postgres', "SELECT count(*) FROM t_009_tbl",
stdout => \$psql_out);
is($psql_out, '6', "Check nextXid handling for prepared subtransactions");
src/test/recovery/t/012_subtransactions.pl 0 → 100644
View file @ 0352c15e
# Tests dedicated to subtransactions in recovery
use strict;
use warnings;
use PostgresNode;
use TestLib;
use Test::More tests => 12;
# Setup master node
my $node_master = get_new_node("master");
$node_master->init(allows_streaming => 1);
$node_master->append_conf('postgresql.conf', qq(
max_prepared_transactions = 10
log_checkpoints = true
));
$node_master->start;
$node_master->backup('master_backup');
$node_master->psql('postgres', "CREATE TABLE t_012_tbl (id int)");
# Setup slave node
my $node_slave = get_new_node('slave');
$node_slave->init_from_backup($node_master, 'master_backup', has_streaming => 1);
$node_slave->start;
# Switch to synchronous replication
$node_master->append_conf('postgresql.conf', qq(
synchronous_standby_names = '*'
));
$node_master->psql('postgres', "SELECT pg_reload_conf()");
my $psql_out = '';
my $psql_rc = '';
###############################################################################
# Check that replay will correctly set SUBTRANS and properly advance nextXid
# so that it won't conflict with savepoint xids.
###############################################################################
$node_master->psql('postgres', "
BEGIN;
DELETE FROM t_012_tbl;
INSERT INTO t_012_tbl VALUES (43);
SAVEPOINT s1;
INSERT INTO t_012_tbl VALUES (43);
SAVEPOINT s2;
INSERT INTO t_012_tbl VALUES (43);
SAVEPOINT s3;
INSERT INTO t_012_tbl VALUES (43);
SAVEPOINT s4;
INSERT INTO t_012_tbl VALUES (43);
SAVEPOINT s5;
INSERT INTO t_012_tbl VALUES (43);
PREPARE TRANSACTION 'xact_012_1';
CHECKPOINT;");
$node_master->stop;
$node_master->start;
$node_master->psql('postgres', "
-- here we can get xid of previous savepoint if nextXid
-- wasn't properly advanced
BEGIN;
INSERT INTO t_012_tbl VALUES (142);
ROLLBACK;
COMMIT PREPARED 'xact_012_1';");
$node_master->psql('postgres', "SELECT count(*) FROM t_012_tbl",
stdout => \$psql_out);
is($psql_out, '6', "Check nextXid handling for prepared subtransactions");
###############################################################################
# Check that replay will correctly set 2PC with more than
# PGPROC_MAX_CACHED_SUBXIDS subtransations and also show data properly
# on promotion
###############################################################################
$node_master->psql('postgres', "DELETE FROM t_012_tbl");
# Function borrowed from src/test/regress/sql/hs_primary_extremes.sql
$node_master->psql('postgres', "
CREATE OR REPLACE FUNCTION hs_subxids (n integer)
RETURNS void
LANGUAGE plpgsql
AS \$\$
BEGIN
IF n <= 0 THEN RETURN; END IF;
INSERT INTO t_012_tbl VALUES (n);
PERFORM hs_subxids(n - 1);
RETURN;
EXCEPTION WHEN raise_exception THEN NULL; END;
\$\$;");
$node_master->psql('postgres', "
BEGIN;
SELECT hs_subxids(127);
COMMIT;");
$node_master->wait_for_catchup($node_slave, 'replay', $node_master->lsn('insert'));
$node_slave->psql('postgres', "SELECT coalesce(sum(id),-1) FROM t_012_tbl",
stdout => \$psql_out);
is($psql_out, '8128', "Visible");
$node_master->stop;
$node_slave->promote;
$node_slave->poll_query_until('postgres',
"SELECT NOT pg_is_in_recovery()")
or die "Timed out while waiting for promotion of standby";
$node_slave->psql('postgres', "SELECT coalesce(sum(id),-1) FROM t_012_tbl",
stdout => \$psql_out);
is($psql_out, '8128', "Visible");
# restore state
($node_master, $node_slave) = ($node_slave, $node_master);
$node_slave->enable_streaming($node_master);
$node_slave->append_conf('recovery.conf', qq(
recovery_target_timeline='latest'
));
$node_slave->start;
$node_slave->psql('postgres', "SELECT coalesce(sum(id),-1) FROM t_012_tbl",
stdout => \$psql_out);
is($psql_out, '8128', "Visible");
$node_master->psql('postgres', "DELETE FROM t_012_tbl");
# Function borrowed from src/test/regress/sql/hs_primary_extremes.sql
$node_master->psql('postgres', "
CREATE OR REPLACE FUNCTION hs_subxids (n integer)
RETURNS void
LANGUAGE plpgsql
AS \$\$
BEGIN
IF n <= 0 THEN RETURN; END IF;
INSERT INTO t_012_tbl VALUES (n);
PERFORM hs_subxids(n - 1);
RETURN;
EXCEPTION WHEN raise_exception THEN NULL; END;
\$\$;");
$node_master->psql('postgres', "
BEGIN;
SELECT hs_subxids(127);
PREPARE TRANSACTION 'xact_012_1';");
$node_master->wait_for_catchup($node_slave, 'replay', $node_master->lsn('insert'));
$node_slave->psql('postgres', "SELECT coalesce(sum(id),-1) FROM t_012_tbl",
stdout => \$psql_out);
is($psql_out, '-1', "Not visible");
$node_master->stop;
$node_slave->promote;
$node_slave->poll_query_until('postgres',
"SELECT NOT pg_is_in_recovery()")
or die "Timed out while waiting for promotion of standby";
$node_slave->psql('postgres', "SELECT coalesce(sum(id),-1) FROM t_012_tbl",
stdout => \$psql_out);
is($psql_out, '-1', "Not visible");
# restore state
($node_master, $node_slave) = ($node_slave, $node_master);
$node_slave->enable_streaming($node_master);
$node_slave->append_conf('recovery.conf', qq(
recovery_target_timeline='latest'
));
$node_slave->start;
$psql_rc = $node_master->psql('postgres', "COMMIT PREPARED 'xact_012_1'");
is($psql_rc, '0', "Restore of PGPROC_MAX_CACHED_SUBXIDS+ prepared transaction on promoted slave");
$node_master->psql('postgres', "SELECT coalesce(sum(id),-1) FROM t_012_tbl",
stdout => \$psql_out);
is($psql_out, '8128', "Visible");
$node_master->psql('postgres', "DELETE FROM t_012_tbl");
$node_master->psql('postgres', "
BEGIN;
SELECT hs_subxids(201);
PREPARE TRANSACTION 'xact_012_1';");
$node_master->wait_for_catchup($node_slave, 'replay', $node_master->lsn('insert'));
$node_slave->psql('postgres', "SELECT coalesce(sum(id),-1) FROM t_012_tbl",
stdout => \$psql_out);
is($psql_out, '-1', "Not visible");
$node_master->stop;
$node_slave->promote;
$node_slave->poll_query_until('postgres',
"SELECT NOT pg_is_in_recovery()")
or die "Timed out while waiting for promotion of standby";
$node_slave->psql('postgres', "SELECT coalesce(sum(id),-1) FROM t_012_tbl",
stdout => \$psql_out);
is($psql_out, '-1', "Not visible");
# restore state
($node_master, $node_slave) = ($node_slave, $node_master);
$node_slave->enable_streaming($node_master);
$node_slave->append_conf('recovery.conf', qq(
recovery_target_timeline='latest'
));
$node_slave->start;
$psql_rc = $node_master->psql('postgres', "ROLLBACK PREPARED 'xact_012_1'");
is($psql_rc, '0', "Rollback of PGPROC_MAX_CACHED_SUBXIDS+ prepared transaction on promoted slave");
$node_master->psql('postgres', "SELECT coalesce(sum(id),-1) FROM t_012_tbl",
stdout => \$psql_out);
is($psql_out, '-1', "Not visible");
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