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https://issues.apache.org/jira/browse/MAPREDUCE-6618?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15118148#comment-15118148
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Jason Lowe commented on MAPREDUCE-6618:
---------------------------------------
Patch looks better, thanks! What about the client cache that's also in
YARNRunner? It potentially has a history server client that I think also
should be closed in this case.
> YarnClientProtocolProvider leaking the YarnClient thread.
> ----------------------------------------------------------
>
> Key: MAPREDUCE-6618
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6618
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Xuan Gong
> Assignee: Xuan Gong
> Attachments: MAPREDUCE-6618.1.patch, MAPREDUCE-6618.2.patch
>
>
> YarnClientProtocolProvider creates YarnRunner which includes
> ResourceMgrDelegate. In ResourceMgrDelegate, we would initiate and start
> yarnclient. The yarnClient thread would be leaked due to
> {code}
> @Override
> public void close(ClientProtocol clientProtocol) throws IOException {
> // nothing to do
> }
> {code} in YarnClientProtocolProvider
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