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From "Jun Gong (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2047) RM should honor NM heartbeat expiry after RM restart
Date Tue, 10 Nov 2015 13:35:11 GMT

    [ https://issues.apache.org/jira/browse/YARN-2047?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14998572#comment-14998572
] 

Jun Gong commented on YARN-2047:
--------------------------------

I am not sure why AM cannot be trusted, but information about running containers could be
regarded as a reference, and they are only used for specific usage described above.

> RM should honor NM heartbeat expiry after RM restart
> ----------------------------------------------------
>
>                 Key: YARN-2047
>                 URL: https://issues.apache.org/jira/browse/YARN-2047
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Bikas Saha
>
> After the RM restarts, it forgets about existing NM's (and their potentially decommissioned
status too). After restart, the RM cannot maintain the contract to the AM's that a lost NM's
containers will be marked finished within the expiry time.



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