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Query killer

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Revision as of 12:54, 10 July 2014 by imported>Nemo bis (copy from bugzilla:58157#c5)
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The query killer on production databases is a 60s pt-kill job on slaves after query spikes causing outages in November 2013. When the number of slow queries on a slave grows beyond a threshold the slowest one above 60s is sniped to keep the box alive. This only affects wikiuser, not wikiadmin.