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From "Bikas Saha (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1029) Allow embedding leader election into the RM
Date Fri, 03 Jan 2014 17:50:03 GMT

    [ https://issues.apache.org/jira/browse/YARN-1029?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13861713#comment-13861713
] 

Bikas Saha commented on YARN-1029:
----------------------------------

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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