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From "Jian He (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1886) Exceptions in the RM log while cleaning up app attempt
Date Mon, 31 Mar 2014 17:15:26 GMT

    [ https://issues.apache.org/jira/browse/YARN-1886?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13955396#comment-13955396

Jian He commented on YARN-1886:

This exception is likely due to RM failed over and was constructing the NMToken with a new
key, but NM had not yet re-synced with RM to get the new key and was still hold the old NMToken
key. If NM re-sync takes arbitrarily long, we may see the situation quite often that new RM
is unable to explicitly communicate with this NM e.g. stop/start AM container on this NM.

> Exceptions in the RM log while cleaning up app attempt
> ------------------------------------------------------
>                 Key: YARN-1886
>                 URL: https://issues.apache.org/jira/browse/YARN-1886
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 2.4.0
>            Reporter: Arpit Gupta
> Noticed exceptions in the RM log while HA tests were running where we killed RM/AM/Namnode
> RM failed over and the new active RM tried to kill the old app attempt and ran into this

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