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https://issues.apache.org/jira/browse/MESOS-9786?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Meng Zhu reassigned MESOS-9786:
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Assignee: Meng Zhu
> Race between two REMOVE_QUOTA calls crashes the master.
> -------------------------------------------------------
>
> Key: MESOS-9786
> URL: https://issues.apache.org/jira/browse/MESOS-9786
> Project: Mesos
> Issue Type: Bug
> Affects Versions: 1.5.1, 1.8.0, 1.8.1
> Reporter: Andrei Sekretenko
> Assignee: Meng Zhu
> Priority: Major
> Labels: resource-management
>
> The existence of the quota in the master is validated here:
> [https://github.com/apache/mesos/blob/a9a2acabd03181865055b77cf81e7bb310b236d6/src/master/quota_handler.cpp#L700]
> Then the quota is removed from master in a deferred method call:
> [https://github.com/apache/mesos/blob/a9a2acabd03181865055b77cf81e7bb310b236d6/src/master/quota_handler.cpp#L744]
> And then removed from allocator in another deferred call:
> [https://github.com/apache/mesos/blob/a9a2acabd03181865055b77cf81e7bb310b236d6/src/master/quota_handler.cpp#L753]
> So, there is a race between two simultaneous REMOVE_QUOTA calls.
> We observe this race on a heavily loaded cluster. Currently we suspect that
> the client retries the call (due to the call being not processed for a long
> time), and this triggers the race.
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