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From "Zhijie Shen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-514) Delayed store operations should not result in RM unavailability for app submission
Date Fri, 12 Apr 2013 04:33:16 GMT

    [ https://issues.apache.org/jira/browse/YARN-514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13629782#comment-13629782
] 

Zhijie Shen commented on YARN-514:
----------------------------------

@Biksa, the enum values in the proto needs to be changed because YarnApplicationStateProto
will be used by application report. MR may also need it when doing state conversion from Yarn
state to MR state.
                
> 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
>
>
> 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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