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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-514) Delayed store operations should not result in RM unavailability for app submission
Date Thu, 18 Apr 2013 03:39:15 GMT

    [ https://issues.apache.org/jira/browse/YARN-514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13634799#comment-13634799
] 

Karthik Kambatla commented on YARN-514:
---------------------------------------

[~bikassaha], [~zjshen]: can one of you verify if this is indeed the case. I couldn't identify
the root cause from cursory examination.
                
> Delayed store operations should not result in RM unavailability for app submission
> ----------------------------------------------------------------------------------
>
>                 Key: YARN-514
>                 URL: https://issues.apache.org/jira/browse/YARN-514
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Bikas Saha
>            Assignee: Zhijie Shen
>         Attachments: YARN-514.1.patch, YARN-514.2.patch, YARN-514.3.patch, YARN-514.4.patch,
YARN-514.5.patch, YARN-514.6.patch, YARN-514.7.patch, YARN-514.8.patch
>
>
> Currently, app submission is the only store operation performed synchronously because
the app must be stored before the request returns with success. This makes the RM susceptible
to blocking all client threads on slow store operations, resulting in RM being perceived as
unavailable by clients.

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