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https://issues.apache.org/jira/browse/YARN-5911?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15683146#comment-15683146
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sandflee commented on YARN-5911:
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seems no need to keep var stopped in DrainDispatcher?
> DrainDispatcher does not drain all events on stop even if
> setDrainEventsOnStop is true
> --------------------------------------------------------------------------------------
>
> Key: YARN-5911
> URL: https://issues.apache.org/jira/browse/YARN-5911
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Varun Saxena
> Assignee: Varun Saxena
> Attachments: YARN-5911.01.patch, YARN-5911.02.patch
>
>
> DrainDispatcher#serviceStop sets the stopped flag first before draining the
> event queue.
> This means that the thread terminates as soon as it encounters stopped flag
> as true and does not continue to process leftover events in queue, something
> which it should do if setDrainEventsOnStop is set.
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