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https://issues.apache.org/jira/browse/YARN-2917?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14242853#comment-14242853
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Jian He commented on YARN-2917:
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patch looks good, thanks Rohith !
Committing this.
bq. I observed that ResourceManager#rmDispatcher does not drain ,is it bug?
I think the decision was to make the state-store relevant dispatcher drained.
rmDispatcher is a global dispatcher. draining that may take more time depending
on how busy the cluster is. I think it's still fine to drain the rmDispatcher,
but need to evaluate the pros and cons.
> Potential deadlock in AsyncDispatcher when system.exit called in
> AsyncDispatcher#dispatch and AsyscDispatcher#serviceStop from shutdown hook
> --------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: YARN-2917
> URL: https://issues.apache.org/jira/browse/YARN-2917
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Reporter: Rohith
> Assignee: Rohith
> Priority: Critical
> Attachments: 0001-YARN-2917.patch, 0002-YARN-2917.patch
>
>
> I encoutered scenario where RM hanged while shutting down and keep on logging
> {{2014-12-03 19:32:44,283 INFO org.apache.hadoop.yarn.event.AsyncDispatcher:
> Waiting for AsyncDispatcher to drain.}}
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