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Displaying posts with tag: lock wait timeout (reset)

Lock wait timeout on slaves
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We had a one of our slave servers frequently stop replicating with the “Innodb Lock Wait Timeout” error. The slave IO thread would continue to fetch the binlogs while the slave SQL thread kept stopping with  the above mentioned error. The teams initial inclination was to change the innodb lock wait timeout variable from 50 secs to a higher value. It was a read-only slave. Our expectation was there would be no competing writes. Then we started listing what are the next steps possible and what could be wrong.

  1. There could be a user with “super” privilege in the system that was running updates directly on the slave …
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