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From "Jason Lowe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5332) Support token-preserving restart of history server
Date Wed, 11 Sep 2013 21:10:52 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5332?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13764781#comment-13764781
] 

Jason Lowe commented on MAPREDUCE-5332:
---------------------------------------

The test failures are unrelated.  TestUberAM still hasn't been fixed, see MAPREDUCE-5481.
 I can reproduce the TestMRJobClient failure on trunk, filed MAPREDUCE-5503.
                
> Support token-preserving restart of history server
> --------------------------------------------------
>
>                 Key: MAPREDUCE-5332
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5332
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>          Components: jobhistoryserver
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>         Attachments: MAPREDUCE-5332-2.patch, MAPREDUCE-5332-3.patch, MAPREDUCE-5332-4.patch,
MAPREDUCE-5332.patch
>
>
> To better support rolling upgrades through a cluster, the history server needs the ability
to restart without losing track of delegation tokens.

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