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112 lines
2.9 KiB
Plaintext
112 lines
2.9 KiB
Plaintext
# See if slave restarts the transaction after failing on an InnoDB deadlock error.
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# Note: testing what happens when too many retries is possible, but
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# needs large waits when running with --debug, so we don't do it.
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# The same way, this test may not test what is expected when run
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# under Valgrind, timings are too short then (with --valgrind I
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# (Guilhem) have seen the test manage to provoke lock wait timeout
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# error but not deadlock error; that is ok as code deals with the two
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# errors in exactly the same way.
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# We don't 'show status like 'slave_retried_transactions'' because this
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# is not repeatable (depends on sleeps).
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source include/have_innodb.inc;
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source include/master-slave.inc;
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connection master;
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create table t1 (a int not null, key(a)) engine=innodb;
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create table t2 (a int not null, key(a)) engine=innodb;
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create table t3 (a int) engine=innodb;
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create table t4 (a int) engine=innodb;
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show variables like 'slave_transaction_retries';
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sync_slave_with_master;
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show create table t1;
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show create table t2;
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show variables like 'slave_transaction_retries';
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stop slave;
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# 1) Test deadlock
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connection master;
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begin;
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# Let's keep BEGIN and the locked statement in two different relay logs.
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let $1=200;
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disable_query_log;
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while ($1)
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{
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eval insert into t3 values( $1 );
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dec $1;
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}
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enable_query_log;
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insert into t3 select * from t2 for update;
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insert into t1 values(1);
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commit;
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save_master_pos;
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connection slave;
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begin;
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# Let's make our transaction large so that it's slave who is chosen as
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# victim
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let $1=1000;
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disable_query_log;
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while ($1)
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{
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eval insert into t4 values( $1 );
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dec $1;
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}
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enable_query_log;
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select * from t1 for update;
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start slave;
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--sleep 3; # hope that slave is blocked now
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insert into t2 values(22); # provoke deadlock, slave should be victim
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commit;
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sync_with_master;
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select * from t1; # check that slave succeeded finally
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select * from t2;
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# check that no error is reported
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--replace_column 1 # 8 # 9 # 23 # 33 #
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--replace_result $MASTER_MYPORT MASTER_MYPORT
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show slave status;
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# 2) Test lock wait timeout
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stop slave;
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change master to master_log_pos=401; # the BEGIN log event
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begin;
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select * from t2 for update; # hold lock
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start slave;
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--sleep 10; # slave should have blocked, and be retrying
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commit;
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sync_with_master;
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select * from t1; # check that slave succeeded finally
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select * from t2;
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# check that no error is reported
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--replace_column 1 # 8 # 9 # 23 # 33 #
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--replace_result $MASTER_MYPORT MASTER_MYPORT
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show slave status;
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# Now we repeat 2), but with BEGIN in the same relay log as
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# COMMIT (to see if seeking into hot log is ok).
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set global max_relay_log_size=0;
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# This is really copy-paste of 2) of above
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stop slave;
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change master to master_log_pos=401;
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begin;
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select * from t2 for update;
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start slave;
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--sleep 10;
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commit;
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sync_with_master;
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select * from t1;
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select * from t2;
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--replace_column 1 # 8 # 9 # 23 # 33 #
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--replace_result $MASTER_MYPORT MASTER_MYPORT
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show slave status;
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connection master;
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drop table t1,t2,t3,t4;
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sync_slave_with_master;
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