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https://issues.apache.org/jira/browse/YARN-2053?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14001551#comment-14001551
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Steve Loughran commented on YARN-2053:
--------------------------------------

-thanks for fixing this, and happy to have found a restart bug early

> Slider AM fails to restart: NPE in 
> RegisterApplicationMasterResponseProto$Builder.addAllNmTokensFromPreviousAttempts
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: YARN-2053
>                 URL: https://issues.apache.org/jira/browse/YARN-2053
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>    Affects Versions: 2.4.0
>            Reporter: Sumit Mohanty
>            Assignee: Wangda Tan
>             Fix For: 2.4.1
>
>         Attachments: YARN-2053.patch, YARN-2053.patch, YARN-2053.patch, 
> YARN-2053.patch, YARN-2053.patch, 
> yarn-yarn-nodemanager-c6403.ambari.apache.org.log.bak, 
> yarn-yarn-resourcemanager-c6403.ambari.apache.org.log.bak
>
>
> Slider AppMaster restart fails with the following:
> {code}
> org.apache.hadoop.yarn.proto.YarnServiceProtos$RegisterApplicationMasterResponseProto$Builder.addAllNmTokensFromPreviousAttempts(YarnServiceProtos.java:2700)
> {code}



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