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From "Siddharth Seth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-355) RM app submission jams under load
Date Wed, 06 Feb 2013 18:51:13 GMT

    [ https://issues.apache.org/jira/browse/YARN-355?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13572661#comment-13572661
] 

Siddharth Seth commented on YARN-355:
-------------------------------------

+1.
                
> RM app submission jams under load
> ---------------------------------
>
>                 Key: YARN-355
>                 URL: https://issues.apache.org/jira/browse/YARN-355
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 2.0.0-alpha, 0.23.6
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>            Priority: Blocker
>         Attachments: YARN-355.branch-23.patch, YARN-355.branch-23.patch, YARN-355.branch-23.patch,
YARN-355.patch, YARN-355.patch, YARN-355.patch
>
>
> The RM performs a loopback connection to itself to renew its own tokens.  If app submissions
consume all RPC handlers for {{ClientRMProtocol}}, then app submissions block because it cannot
loopback to itself to do the renewal.

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