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d7767d4ab6
After ALTER TABLE which changed only table's metadata, row-based binlog sometimes got corrupted since the tablemap was unexpectedly set to 0 for subsequent updates to the same table. ALTER TABLE which changed only table's metadata always reset table_map_id for the table share to 0. Despite the fact that 0 is a valid value for table_map_id, this step caused problems as it could have created situation in which we had more than one table share with table_map_id equal 0. If more than one table with table_map_id are 0 were updated in the same statement, updates to these different tables were written into the same rows event. This caused slave server to crash. This bug happens only on 5.1. It doesn't affect 5.5+. This patch solves this problem by ensuring that ALTER TABLE statements which change metadata only never reset table_map_id to 0. To do this it changes reopen_table() to correctly use refreshed table_map_id value instead of using the old one/ resetting it.
41 lines
1.1 KiB
Text
41 lines
1.1 KiB
Text
stop slave;
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drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
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reset master;
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reset slave;
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drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
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start slave;
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drop database if exists mysqltest;
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create database mysqltest;
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create table mysqltest.t1 ( n int);
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alter table mysqltest.t1 add m int;
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insert into mysqltest.t1 values (1,2);
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create table mysqltest.t2 (n int);
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insert into mysqltest.t2 values (45);
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rename table mysqltest.t2 to mysqltest.t3, mysqltest.t1 to mysqltest.t2;
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select * from mysqltest.t2;
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n m
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1 2
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select * from mysqltest.t3;
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n
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45
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drop database mysqltest;
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# BUG#56226 Table map set to 0 after altering MyISAM table
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SET SESSION binlog_format='ROW';
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USE test;
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CREATE TABLE t1 (a INT, b INT) ENGINE MyISAM;
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CREATE TABLE t2 (a VARCHAR(255), b VARCHAR(255)) ENGINE MyISAM;
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CREATE TRIGGER trg_t1ai
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AFTER INSERT ON t1 FOR EACH ROW
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BEGIN
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INSERT INTO t2 (a) VALUES (NEW.a);
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END;//
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ALTER TABLE t1 CHANGE b c INT;
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ALTER TABLE t2 CHANGE b c VARCHAR(255);
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INSERT INTO t1 (a) VALUES(2);
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Comparing tables master:test.t1 and slave:test.t1
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Comparing tables master:test.t2 and slave:test.t2
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DROP TABLE t1, t2;
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