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From "Bikas Saha (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1029) Allow embedding leader election into the RM
Date Tue, 06 Aug 2013 00:30:48 GMT

    [ https://issues.apache.org/jira/browse/YARN-1029?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13730209#comment-13730209
] 

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

Yes. Thats correct. I am aware of the HDFS discussions. ZKFC is definitely going to be part
of RM failover and supported. Given RM's lower memory consumption and sane values of ZK timeouts
the GC problem may not be severe in the RM's case. On the other hand, with RM state being
also stored in ZK, having an embedded FC may considerably simplify deployment and maintenance
of RM failover. So its not a bad option to have.
                
> 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
>
> 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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