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From "Jian He (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-582) Restore appToken for app attempt after RM restart
Date Tue, 07 May 2013 20:33:17 GMT

    [ https://issues.apache.org/jira/browse/YARN-582?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13651268#comment-13651268
] 

Jian He commented on YARN-582:
------------------------------

bq. Why not simply create it once in the RMAppAttemptImpl and re-use it like earlier?
The getClientToken method has been changed to get hadoop-common-token. we can do that, but
then we need one more api in RMAppAttempt to get yarn-api-token
                
> Restore appToken for app attempt after RM restart
> -------------------------------------------------
>
>                 Key: YARN-582
>                 URL: https://issues.apache.org/jira/browse/YARN-582
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Bikas Saha
>            Assignee: Jian He
>         Attachments: YARN-582.1.patch, YARN-582.2.patch, YARN-582.3.patch, YARN-582.4.patch,
YARN-582.5.patch
>
>
> These need to be saved and restored on a per app attempt basis. This is required only
when work preserving restart is implemented for secure clusters. In non-preserving restart
app attempts are killed and so this does not matter.

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