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https://issues.apache.org/jira/browse/MESOS-1973?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14185560#comment-14185560
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Benjamin Mahler commented on MESOS-1973:
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Ok, although IMO this is still important as messages that are in the master's
queue may be quite large without this patch.
For example, if 20,000 slaves send 10MB of {{data}} and {{message}} information
in the task history during re-registration, that means the master may wind up
storing 200GB of messages in its queue during re-registration.
> 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
> 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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