EVOLUTION-MANAGER

Edit File: galera_transaction_replay.test

#
# This test tests the operation of transaction replay. If a potentially conflicting remote transaction arrives at
# just the right time during the commit of a local transaction, the local transaction will be aborted and replayed.
#

--source include/galera_cluster.inc
--source include/have_innodb.inc
--source include/have_debug_sync.inc
--source suite/galera/include/galera_have_debug_sync.inc

--let $wsrep_local_replays_old = `SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_local_replays'`

CREATE TABLE t1 (f1 INTEGER PRIMARY KEY, f2 CHAR(1));
INSERT INTO t1 VALUES (1, 'a');
INSERT INTO t1 VALUES (2, 'a');

--connection node_1
SET AUTOCOMMIT=ON;
START TRANSACTION;

UPDATE t1 SET f2 = 'b' WHERE f1 = 1;
SELECT * FROM t1 WHERE f1 = 2 FOR UPDATE;

# Block the commit
--connect node_1a, 127.0.0.1, root, , test, $NODE_MYPORT_1
--let $galera_sync_point = commit_monitor_enter_sync
--source include/galera_set_sync_point.inc

--connection node_1
--send COMMIT;

# Wait until commit is blocked
--connection node_1a
SET SESSION wsrep_sync_wait = 0;
--source include/galera_wait_sync_point.inc

# Issue a conflicting update on node #2
--connection node_2
UPDATE t1 SET f2 = 'c' WHERE f1 = 2;

# Wait for both transactions to be blocked
--connection node_1a
--let $wait_condition = SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE STATE LIKE 'Update_rows_log_event::find_row%';
--source include/wait_condition.inc

--let $wait_condition = SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE STATE = 'init' AND INFO = 'COMMIT';
--source include/wait_condition.inc

# Unblock the commit
--connection node_1a
--source include/galera_clear_sync_point.inc
--source include/galera_signal_sync_point.inc

# Commit succeeds
--connection node_1
--reap

SELECT COUNT(*) = 1 FROM t1 WHERE f2 = 'b';
SELECT COUNT(*) = 1 FROM t1 WHERE f2 = 'c';

# wsrep_local_replays has increased by 1
--let $wsrep_local_replays_new = `SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_local_replays'`
--disable_query_log
--eval SELECT $wsrep_local_replays_new - $wsrep_local_replays_old = 1 AS wsrep_local_replays;
--enable_query_log

--connection node_2
SELECT COUNT(*) = 1 FROM t1 WHERE f2 = 'b';
SELECT COUNT(*) = 1 FROM t1 WHERE f2 = 'c';

DROP TABLE t1;

#echo "# test for PS replaying"

#
# test replaying of prepared statements
#
--connection node_1
CREATE TABLE t1 (i int primary key, j int) ENGINE=INNODB;
INSERT INTO t1 VALUES (1, 0), (3, 0);
SELECT * FROM t1;

PREPARE stmt1 FROM "UPDATE t1 SET j = 1 where i > 0";

# block the commit of PS
--connection node_1a
--let $galera_sync_point = commit_monitor_enter_sync
--source include/galera_set_sync_point.inc

--connection node_1
--send EXECUTE stmt1;

# Wait until commit is blocked
--connection node_1a
SET SESSION wsrep_sync_wait = 0;
--source include/galera_wait_sync_point.inc

# Issue a conflicting update on node_2
--connection node_2
#UPDATE t1 SET j=2;
INSERT INTO t1 VALUES(2,2);

# Wait until applying begins in node_1
--connection node_1a
--let $wait_condition = SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE STATE LIKE 'Write_rows_log_event::write_row%';
--source include/wait_condition.inc

# Unblock the PS commit
--connection node_1a
--source include/galera_clear_sync_point.inc
--source include/galera_signal_sync_point.inc

# Commit succeeds
--connection node_1
--reap
SELECT * FROM t1;

--connection node_2
SELECT * FROM t1;

--connection node_1
DEALLOCATE PREPARE stmt1;
DROP TABLE t1;