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https://issues.apache.org/jira/browse/YARN-3842?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14596776#comment-14596776
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Jian He commented on YARN-3842:
-------------------------------

I think the latest patch is safe for 2.7.1,  +1

> NM restarts could lead to app failures
> --------------------------------------
>
>                 Key: YARN-3842
>                 URL: https://issues.apache.org/jira/browse/YARN-3842
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 2.7.0
>            Reporter: Karthik Kambatla
>            Assignee: Robert Kanter
>            Priority: Critical
>         Attachments: MAPREDUCE-6409.001.patch, MAPREDUCE-6409.002.patch, 
> YARN-3842.001.patch, YARN-3842.002.patch
>
>
> Consider the following scenario:
> 1. RM assigns a container on node N to an app A.
> 2. Node N is restarted
> 3. A tries to launch container on node N.
> 3 could lead to an NMNotYetReadyException depending on whether NM N has 
> registered with the RM. In MR, this is considered a task attempt failure. A 
> few of these could lead to a task/job failure.



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