Mysql Slave stuck in "System lock"

Posted by Greg on Server Fault See other posts from Server Fault or by Greg
Published on 2013-11-04T17:31:06Z Indexed on 2013/11/04 21:57 UTC
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mysql

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master-slave

My MySQL slave is spending a lot of time in Slave_SQL_Running_State: System lock. I can see that the system is currently I/O write bound, and that it is processing the log, although slowly. Show processlist doesn't show anything other than "Waiting for master to send event" and "System lock" when it is in this state.

All my tables (other than the system tables) are InnoDB, and external locking is disabled. What is the slave doing in this state?

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