[Buildbot-commits] [Buildbot] #1036: buildrequest can be multiply claimed on MySQL

[Buildbot]

#1036: buildrequest can be multiply claimed on MySQL
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Reporter:  dustin   |       Owner:       
    Type:  defect   |      Status:  new  
Priority:  blocker  |   Milestone:  0.8.3
 Version:  0.8.1    |    Keywords:  db   
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 Even with InnoDB, it is not an error for two concurrent transactions to
 alter the same row.  The serialization is simple: the second transaction
 to complete takes effect.

 So updating {{{buildrequests.claimed_at}}} is not sufficient to actually
 claim a buildrequest - in fact, we're seeing buildrequests multiply
 claimed in https://bugzilla.mozilla.org/show_bug.cgi?id=592244.

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Ticket URL: <http://buildbot.net/trac/ticket/1036>
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