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https://issues.apache.org/jira/browse/YARN-4277?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14985294#comment-14985294
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Jason Lowe commented on YARN-4277:
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There was some previous discussion of storing at least some state for NMs.  See 
YARN-2047 and YARN-2567.

> containers would be leaked if nm crashed  and rm failover
> ---------------------------------------------------------
>
>                 Key: YARN-4277
>                 URL: https://issues.apache.org/jira/browse/YARN-4277
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: sandflee
>
> nm restart and rm ha is enabled.
> 1,  nm crashed, after timeout, rm send container complete msg to 
> corresponding AM.
> 2, rm failovers
> 3, nm restart and register to RM , recovering containers running on NM, these 
> containers and leaked.



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