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From "Robert Kanter (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4180) AMLauncher does not retry on failures when talking to NM
Date Tue, 22 Sep 2015 17:57:05 GMT

    [ https://issues.apache.org/jira/browse/YARN-4180?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14903096#comment-14903096
] 

Robert Kanter commented on YARN-4180:
-------------------------------------

+1 after doing those.

> AMLauncher does not retry on failures when talking to NM 
> ---------------------------------------------------------
>
>                 Key: YARN-4180
>                 URL: https://issues.apache.org/jira/browse/YARN-4180
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 2.7.1
>            Reporter: Anubhav Dhoot
>            Assignee: Anubhav Dhoot
>            Priority: Critical
>         Attachments: YARN-4180.001.patch
>
>
> We see issues with RM trying to launch a container while a NM is restarting and we get
exceptions like NMNotReadyException. While YARN-3842 added retry for other clients of NM (AMs
mainly) its not used by AMLauncher in RM causing there intermittent errors to cause job failures.
This can manifest during rolling restart of NMs. 



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