MySQL replication hung after slave goes offline and comes back online again

Posted by Ed Manet on Server Fault See other posts from Server Fault or by Ed Manet
Published on 2013-10-16T15:38:41Z Indexed on 2013/11/12 3:58 UTC
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mysql

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mysql-replication

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sles11

I have a master server and several slave servers replicating a single database. I am using in MySQL 5.0 in SLES 11. During fault tolerance testing I found that when the slave's network connection is broken (cable un-plugged) and then restored, replication hangs. It shows no errors and the slave appears to be running but the Read_Master_Log_Pos and Exec_Master_Log_Pos values do not match the log postion on the master server.

The Slave_IO_State is "Waiting for master to send event".

The Slave_IO_Running and Slave_SQL_Running values are both are "Yes".

The Master_Log_File and Relay_Master_Log_File match.

If I stop and start the slave or restart the mysql daemon, replication starts working again.

Any ideas on what I can do about this?

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