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BUG#45999 Row based replication fails when auto_increment field = 0

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In RBR, There is an inconsistency between slaves and master.
When INSERT statement which includes an auto_increment field is executed,
Store engine of master will check the value of the auto_increment field. 
It will generate a sequence number and then replace the value, if its value is NULL or empty.
if the field's value is 0, the store engine will do like encountering the NULL values 
unless NO_AUTO_VALUE_ON_ZERO is set into SQL_MODE.
In contrast, if the field's value is 0, Store engine of slave always generates a new sequence number 
whether or not NO_AUTO_VALUE_ON_ZERO is set into SQL_MODE.

SQL MODE of slave sql thread is always consistency with master's.
Another variable is related to this bug.
If generateing a sequence number is decided by the values of
table->auto_increment_field_not_null and SQL_MODE(if includes MODE_NO_AUTO_VALUE_ON_ZERO)
The table->auto_increment_is_not_null is FALSE, which causes this bug to appear. ..
This commit is contained in:
unknown
2009-09-10 18:05:53 +08:00
parent 104d9ce76a
commit e436b8866b
3 changed files with 156 additions and 1 deletions
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68
mysql-test/suite/rpl/r/rpl_auto_increment.result
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@ -244,3 +244,71 @@ t1 CREATE TABLE `t1` (
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=latin1
drop table t1;
stop slave;
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
reset master;
reset slave;
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
start slave;
DROP TABLE IF EXISTS t1;
DROP TABLE IF EXISTS t2;
CREATE TABLE t1 (id INT NOT NULL AUTO_INCREMENT PRIMARY KEY) ENGINE=innodb;
CREATE TABLE t2 (id INT NOT NULL AUTO_INCREMENT PRIMARY KEY) ENGINE=myisam;
SET SQL_MODE='';
INSERT INTO t1 VALUES(NULL);
INSERT INTO t2 VALUES(NULL);
SELECT * FROM t1;
id
1
SELECT * FROM t2;
id
1
INSERT INTO t1 VALUES();
INSERT INTO t2 VALUES();
SELECT * FROM t1;
id
1
2
SELECT * FROM t2;
id
1
2
INSERT INTO t1 VALUES(0);
INSERT INTO t2 VALUES(0);
SELECT * FROM t1;
id
1
2
3
SELECT * FROM t2;
id
1
2
3
SET SQL_MODE=NO_AUTO_VALUE_ON_ZERO;
INSERT INTO t1 VALUES(0);
INSERT INTO t2 VALUES(0);
SELECT * FROM t1;
id
0
1
2
3
SELECT * FROM t2;
id
0
1
2
3
INSERT INTO t1 VALUES(4);
INSERT INTO t2 VALUES(4);
FLUSH LOGS;
Comparing tables master:test.t1 and slave:test.t1
Comparing tables master:test.t2 and slave:test.t2
DROP TABLE t1;
DROP TABLE t2;
Comparing tables master:test.t1 and slave:test.t1
Comparing tables master:test.t2 and slave:test.t2
DROP TABLE t1;
DROP TABLE t2;
SET SQL_MODE='';