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https://issues.apache.org/jira/browse/MESOS-1973?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Brenden Matthews resolved MESOS-1973.
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Resolution: Fixed
Fix Version/s: 0.21.0
> Slaves DoS master on re-registration
> ------------------------------------
>
> Key: MESOS-1973
> URL: https://issues.apache.org/jira/browse/MESOS-1973
> Project: Mesos
> Issue Type: Bug
> Components: master
> Affects Versions: 0.20.1
> Reporter: Brenden Matthews
> Priority: Critical
> Fix For: 0.21.0
>
> Attachments: master-fail.log.gz
>
>
> Recently we've noticed a problem where the master fails over and gets DoS'd
> by the slaves during re-registration. This is caused by a large swath of
> "Possibly orphaned completed task ..." log messages in the master.
> After several hundred of these re-registrations, the master balloons and then
> gets OOM killed by the OS.
> The temporary fix is to stop all the slaves, let a master get elected as
> leader, and then do a slow rolling restart of the slaves (i.e., start one
> slave every 500ms).
> The fix might be to include an exponential backoff during slave
> re-registration.
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