Think API» data inconsistency http://thinkapi.com/blog An interface to tech thoughts Mon, 10 May 2010 10:32:49 +0000 en hourly 1 http://wordpress.org/?v=3.0 How to skip MySQL replication counter http://thinkapi.com/blog/how-to-skip-mysql-replication-counter/ http://thinkapi.com/blog/how-to-skip-mysql-replication-counter/#comments Tue, 07 Oct 2008 17:47:59 +0000 Sukumar http://thinkapi.com/blog/?p=9 There are such times when MySQL replication stops when you run certain updates on the master and the slave fails. Like for example you may have run a create table or an alter table on the master and further inserts but these DDLs get skipped and the inserts into these non-existent tables cause the slave to error out and stop.

A simple way out of this is to run the missing DDLs on the slave and push the counter by a step. This is not recommended as this might cause data inconsistency.

Use the below sql to skip the counter by 1.

SET GLOBAL SQL_SLAVE_SKIP_COUNTER = 1; START SLAVE;

Just remember to use the value 1 for any SQL statement that does not use AUTO_INCREMENT or LAST_INSERT_ID(), otherwise you will need to use the value 2. Statements that use AUTO_INCREMENT or LAST_INSERT_ID() take up 2 events in the binary log.

To skip lots of duplicate errors, you can set this in my.cnf

slave-skip-errors = 1062

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