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The problem is that there is only one autoinc value associated with the query when binlogging. If more than one autoinc values are used in the query, the autoinc values after the first one can be inserted wrongly on slave. So these autoinc values can become inconsistent on master and slave. The problem is resolved by marking all the statements that invoke a trigger or call a function that updated autoinc fields as unsafe, and will switch to row-format in Mixed mode. Actually, the statement is safe if just one autoinc value is used in sub-statement, but it's impossible to check how many autoinc values are used in sub-statement.)
83 lines
2.5 KiB
Plaintext
83 lines
2.5 KiB
Plaintext
#
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# This test verifies if concurrent transactions that invoke a
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# trigger that inserts more than one values into one or more
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# tables with an auto_increment column will make the autoinc
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# values become inconsistent on master and slave.
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#
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connection master;
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create table t1(a int, b int) engine=innodb;
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create table t2(i1 int not null auto_increment, a int, primary key(i1)) engine=innodb;
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eval create trigger tr1 $trigger_action on t1 for each row insert into t2(a) values(6);
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create table t3(a int, b int) engine=innodb;
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create table t4(i1 int not null auto_increment, a int, primary key(i1)) engine=innodb;
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create table t5(a int) engine=innodb;
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delimiter |;
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eval create trigger tr2 $trigger_action on t3 for each row begin
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insert into t4(a) values(f1_insert_triggered());
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insert into t4(a) values(f1_insert_triggered());
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insert into t5(a) values(8);
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end |
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delimiter ;|
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create table t6(i1 int not null auto_increment, a int, primary key(i1)) engine=innodb;
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delimiter //;
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CREATE FUNCTION f1_insert_triggered() RETURNS INTEGER
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BEGIN
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INSERT INTO t6(a) values(2),(3);
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RETURN 1;
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END//
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delimiter ;//
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begin;
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let $binlog_start= query_get_value("SHOW MASTER STATUS", Position, 1);
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insert into t1(a,b) values(1,1),(2,1);
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insert into t3(a,b) values(1,1),(2,1);
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update t1 set a = a + 5 where b = 1;
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update t3 set a = a + 5 where b = 1;
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delete from t1 where b = 1;
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delete from t3 where b = 1;
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connection master1;
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#The default autocommit is set to 1, so the statement is auto committed
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insert into t2(a) values(3);
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insert into t4(a) values(3);
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connection master;
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commit;
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insert into t1(a,b) values(4,2);
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insert into t3(a,b) values(4,2);
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update t1 set a = a + 5 where b = 2;
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update t3 set a = a + 5 where b = 2;
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delete from t1 where b = 2;
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delete from t3 where b = 2;
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--echo # To verify if insert/update in an autoinc column causes statement to be logged in row format
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source include/show_binlog_events.inc;
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commit;
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connection master;
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sync_slave_with_master;
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--echo #Test if the results are consistent on master and slave
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--echo #for 'INVOKES A TRIGGER with $trigger_action action'
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let $diff_table_1=master:test.t2;
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let $diff_table_2=slave:test.t2;
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source include/diff_tables.inc;
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let $diff_table_1=master:test.t4;
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let $diff_table_2=slave:test.t4;
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source include/diff_tables.inc;
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let $diff_table_1=master:test.t6;
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let $diff_table_2=slave:test.t6;
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source include/diff_tables.inc;
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connection master;
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DROP TABLE t1;
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DROP TABLE t2;
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DROP TABLE t3;
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DROP TABLE t4;
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DROP TABLE t5;
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DROP TABLE t6;
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DROP FUNCTION f1_insert_triggered;
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sync_slave_with_master;
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