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https://issues.apache.org/jira/browse/YARN-1029?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13861713#comment-13861713
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Bikas Saha commented on YARN-1029:
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Patch looks good to me. Although the flakiness of the new Test needs to be 
monitored. One option would be to walk through the test in a debugger to 
satisfy yourself that things are indeed happening the way they should.
Lets commit the patch and move onto the next items. I think this patch may have 
partially covered some of the work of the ZKFC jira. We can address further 
comments as they come.

> Allow embedding leader election into the RM
> -------------------------------------------
>
>                 Key: YARN-1029
>                 URL: https://issues.apache.org/jira/browse/YARN-1029
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Bikas Saha
>            Assignee: Karthik Kambatla
>         Attachments: embedded-zkfc-approach.patch, yarn-1029-0.patch, 
> yarn-1029-0.patch, yarn-1029-1.patch, yarn-1029-2.patch, yarn-1029-3.patch, 
> yarn-1029-4.patch, yarn-1029-5.patch, yarn-1029-6.patch, yarn-1029-7.patch, 
> yarn-1029-7.patch, yarn-1029-8.patch, yarn-1029-9.patch, 
> yarn-1029-approach.patch
>
>
> It should be possible to embed common ActiveStandyElector into the RM such 
> that ZooKeeper based leader election and notification is in-built. In 
> conjunction with a ZK state store, this configuration will be a simple 
> deployment option.



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