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--source include/have_innodb.inc
--source include/master-slave.inc
--echo *** Provoke a deadlock on the slave, check that transaction retry succeeds. ***
--connection master
CREATE TABLE t1 (a INT PRIMARY KEY, b INT) ENGINE=InnoDB;
CREATE TABLE t2 (a INT) ENGINE=InnoDB;
INSERT INTO t1(a) VALUES (1), (2), (3), (4), (5);
--sync_slave_with_master
SELECT * FROM t1 ORDER BY a;
# Use MyISAM for t2 on the slave, so we have a way to see how far the
# slave replication thread has proceeded in the transaction.
SET sql_log_bin=0;
ALTER TABLE t2 ENGINE=MyISAM;
SET sql_log_bin=1;
let $old_retry= query_get_value(SHOW STATUS LIKE 'Slave_retried_transactions', Value, 1);
# Setup a separate connection that can deadlock with the replication thread.
# Docs say that InnoDB will try to roll back the smaller transaction. So
# let us make this transaction a big one, so the one in the replication
# thread will be selected for rollback and retry.
--connect (con_temp1,127.0.0.1,root,,test,$SERVER_MYPORT_2,)
--connection con_temp1
BEGIN;
UPDATE t1 SET b=2 WHERE a=4;
--disable_query_log
--let $count=200
while ($count)
{
eval INSERT INTO t1(a) VALUES ($count + 10);
dec $count;
}
--enable_query_log
# Note that InnoDB also (undocumented?) tries to avoid rolling back a
# "transaction" that modified non-transactional tables. So be sure to also
# touch the MyISAM table in this transaction.
INSERT INTO t2 VALUES (2);
DELETE FROM t2 WHERE a=2;
# Create the transaction that should participate in the deadlock on the slave.
--connection master
BEGIN;
UPDATE t1 SET b=1 WHERE a=2;
INSERT INTO t2 VALUES (1);
UPDATE t1 SET b=1 WHERE a=4;
COMMIT;
--save_master_pos
--connection slave
# Wait until replication thread has gone to wait on the a=4 row lock.
--let $wait_condition= SELECT COUNT(*) = 1 FROM t2 WHERE a=1
--source include/wait_condition.inc
# Now provoke the deadlock by waiting on the a=2 row lock while the
# other thread is waiting for our a=4 row lock.
--connection con_temp1
UPDATE t1 SET b=2 WHERE a=2;
SELECT * FROM t1 WHERE a<10 ORDER BY a;
ROLLBACK;
--connection slave
--sync_with_master
SELECT * FROM t1 ORDER BY a;
--echo * There will be two rows in t2 due to the retry.
SELECT * FROM t2 ORDER BY a;
let $new_retry= query_get_value(SHOW STATUS LIKE 'Slave_retried_transactions', Value, 1);
--disable_query_log
eval SELECT $new_retry - $old_retry AS retries;
--enable_query_log
--let $status_items= Last_SQL_Errno, Last_SQL_Error
--source include/show_slave_status.inc
--connection master
DROP TABLE t1;
DROP TABLE t2;
--source include/rpl_end.inc
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