1
0
mirror of https://github.com/MariaDB/server.git synced 2025-08-26 01:44:06 +03:00
Files
mariadb/mysql-test/suite/rpl/r/rpl_row_rec_comp_innodb.result
Luis Soares 16e4677c5d BUG#11766865: 60091: RBR + NO PK + UPDATE NULL VALUE --> SLAVE BREAK WITH ERROR HA_ERR_END_OF_
The slave was not able to find the correct row in the innodb
table, because the row fetched from the innodb table would not
match the before image. This happened because the (don't care)
bytes in the NULLed fields would change once the row was stored
in the storage engine (from zero to the default value). This
would make bulk memory comparison (using memcmp) to fail.
  
We fix this by taking a preventing measure and avoiding memcmp
for tables that contain nullable fields. Therefore, we protect
the slave search routine from engines that return arbitrary
values for don't care bytes (in the nulled fields). Instead, the
slave thread will only check null_bits and those fields that are
not set to NULL when comparing the before image against the
storage engine row.
2011-03-24 10:52:40 +00:00

35 lines
1.7 KiB
Plaintext

include/master-slave.inc
[connection master]
## case #1 - last_null_bit_pos==0 in record_compare without X bit
include/rpl_reset.inc
CREATE TABLE t1 (c1 bigint(20) DEFAULT 0, c2 bigint(20) DEFAULT 0, c3 bigint(20) DEFAULT 0, c4 varchar(1) DEFAULT '', c5 bigint(20) DEFAULT 0, c6 bigint(20) DEFAULT 0, c7 bigint(20) DEFAULT 0, c8 bigint(20) DEFAULT 0) ENGINE=InnoDB DEFAULT CHARSET=latin1;
INSERT INTO t1 ( c5, c6 ) VALUES ( 1 , 35 );
INSERT INTO t1 ( c5, c6 ) VALUES ( NULL, 35 );
UPDATE t1 SET c5 = 'a';
include/diff_tables.inc [master:t1, slave:t1]
DROP TABLE t1;
## case #1.1 - last_null_bit_pos==0 in record_compare with X bit
## (1 column less and no varchar)
include/rpl_reset.inc
CREATE TABLE t1 (c1 bigint(20) DEFAULT 0, c2 bigint(20) DEFAULT 0, c3 bigint(20) DEFAULT 0, c4 bigint(20) DEFAULT 0, c5 bigint(20) DEFAULT 0, c6 bigint(20) DEFAULT 0, c7 bigint(20) DEFAULT 0) ENGINE=InnoDB DEFAULT CHARSET=latin1;
INSERT INTO t1 ( c5, c6 ) VALUES ( 1 , 35 );
INSERT INTO t1 ( c5, c6 ) VALUES ( NULL, 35 );
UPDATE t1 SET c5 = 'a';
include/diff_tables.inc [master:t1, slave:t1]
DROP TABLE t1;
## case #2 - X bit is wrongly set.
include/rpl_reset.inc
CREATE TABLE t1 (c1 int, c2 varchar(1) default '') ENGINE=InnoDB DEFAULT CHARSET= latin1;
INSERT INTO t1(c1) VALUES (10);
INSERT INTO t1(c1) VALUES (NULL);
UPDATE t1 SET c1= 0;
include/diff_tables.inc [master:t1, slave:t1]
DROP TABLE t1;
include/rpl_reset.inc
CREATE TABLE t1 (c1 int(11) NOT NULL, c2 int(11) NOT NULL, c3 int(11) DEFAULT '-1') ENGINE=InnoDB DEFAULT CHARSET=latin1;
INSERT INTO t1 VALUES (1,2,NULL);
UPDATE t1 SET c1=1, c2=2, c3=-1 WHERE c1=1 AND c2=2 AND ISNULL(c3);
include/diff_tables.inc [master:test.t1, slave:test.t1]
DROP TABLE t1;
include/rpl_end.inc