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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1029) Allow embedding leader election into the RM
Date Tue, 10 Dec 2013 09:15:09 GMT

    [ https://issues.apache.org/jira/browse/YARN-1029?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13844110#comment-13844110
] 

Karthik Kambatla commented on YARN-1029:
----------------------------------------

Manually testing the posted patch on a cluster showed that automatic failover works. However,
automatic failover fails to take over after an explicit manual failover. To address this RMActiveStandbyElector
should implement ZKFCProtocol and RMHAServiceTarget#getZKFCProxy should return a proxy to
this. Will address this and other minor details in the next patch.

> 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: 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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