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From "Bikas Saha (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2047) RM should honor NM heartbeat expiry after RM restart
Date Mon, 09 Nov 2015 19:20:11 GMT

    [ https://issues.apache.org/jira/browse/YARN-2047?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14997181#comment-14997181
] 

Bikas Saha commented on YARN-2047:
----------------------------------

I think the general idea is that the AM cannot be trusted about allocated resources or running
containers.

> 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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