mariadb/mysql-test/extra/rpl_tests/rpl_deadlock.test

# See if slave restarts the transaction after failing on an InnoDB deadlock error.

# Note: testing what happens when too many retries is possible, but
# needs large waits when running with --debug, so we don't do it.
# The same way, this test may not test what is expected when run
# under Valgrind, timings are too short then (with --valgrind I
# (Guilhem) have seen the test manage to provoke lock wait timeout
# error but not deadlock error; that is ok as code deals with the two
# errors in exactly the same way.
# We don't 'show status like 'slave_retried_transactions'' because this
# is not repeatable (depends on sleeps).

-- source include/master-slave.inc

connection master;
eval CREATE TABLE t1 (a INT NOT NULL, KEY(a)) ENGINE=$engine_type;
eval CREATE TABLE t2 (a INT NOT NULL, KEY(a)) ENGINE=$engine_type;
# requiring 'unique' for the timeout part of the test
eval CREATE TABLE t3 (a INT  UNIQUE) ENGINE=$engine_type;
eval CREATE TABLE t4 (a INT) ENGINE=$engine_type;
show variables like 'slave_transaction_retries';
sync_slave_with_master;

show create table t1;
show create table t2;
show variables like 'slave_transaction_retries';
stop slave;

# 1) Test deadlock

connection master;
begin;
# Let's keep BEGIN and the locked statement in two different relay logs.
insert into t2 values (0); # t2,t1 actors of deadlock in repl-ed ta
#insert into t3 select * from t2 for update;
let $1=10;
disable_query_log;
while ($1)
{
 eval insert into t3 values( $1 );
 dec $1;
}
enable_query_log;
insert into t1 values(1);
commit;
save_master_pos;

connection slave;
begin;
# Let's make our transaction large so that it's repl-ed msta that's victim
let $1=100;
disable_query_log;
while ($1)
{
 eval insert into t4 values( $1 );
 dec $1;
}
enable_query_log;
select * from t1 for update; # t1,t2 on local slave's
start slave;

# bad option, todo: replicate a non-transactional t_sync with the transaction
# and use wait_until_rows_count macro below
--real_sleep 3 # hope that slave is blocked now
#let $count=11;
#let $table=t_sync;
#--include wait_until_rows_count.inc

select * from t2 for update /* dl */; # provoke deadlock, repl-ed should be victim
commit;
sync_with_master;
select * from t1; # check that repl-ed succeeded finally
select * from t2 /* must be 1 */;
# check that no error is reported
--replace_column 1 # 7 # 8 # 9 # 16 # 22 # 23 # 33 # 35 # 36 #
--replace_result $MASTER_MYPORT MASTER_MYPORT
--vertical_results
show slave status;
--horizontal_results

# 2) Test lock wait timeout

stop slave;
delete from t3;
change master to master_log_pos=548; # the BEGIN log event
begin;
select * from t2 for update; # hold lock
start slave;
--real_sleep 10 # repl-ed should have blocked, and be retrying
select count(*) from t3  /* must be zero */; # replaying begins after rollback
commit;
sync_with_master;
select * from t1; # check that repl-ed succeeded finally
select * from t2;
# check that no error is reported
--replace_column 1 # 7 # 8 # 9 # 11 # 16 # 22 # 23 # 33 #
--replace_result $MASTER_MYPORT MASTER_MYPORT
--vertical_results
show slave status;
--horizontal_results

# Now we repeat 2), but with BEGIN in the same relay log as
# COMMIT (to see if seeking into hot log is ok).
set @my_max_relay_log_size= @@global.max_relay_log_size;
set global max_relay_log_size=0;

# This is really copy-paste of 2) of above
stop slave;
delete from t3;
change master to master_log_pos=548;
begin;
select * from t2 for update;
start slave;
--real_sleep 10
select count(*) from t3  /* must be zero */; # replaying begins after rollback
commit;
sync_with_master;
select * from t1;
select * from t2;
--replace_column 1 # 7 # 8 # 9 # 11 # 16 # 22 # 23 # 33 # 35 # 36 #
--replace_result $MASTER_MYPORT MASTER_MYPORT
--vertical_results
show slave status;
--horizontal_results

connection master;
drop table t1,t2,t3,t4;
sync_slave_with_master;
set global max_relay_log_size= @my_max_relay_log_size;

--echo End of 5.1 tests