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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-2051) Contribute a fair scheduler preemption system test
Date Mon, 01 Nov 2010 23:44:25 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2051?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12927223#action_12927223
] 

Hudson commented on MAPREDUCE-2051:
-----------------------------------

Integrated in Hadoop-Mapreduce-trunk-Commit #525 (See [https://hudson.apache.org/hudson/job/Hadoop-Mapreduce-trunk-Commit/525/])
    MAPREDUCE-2051. Contribute a fair scheduler preemption system test. Contributed by Todd
Lipcon.


> Contribute a fair scheduler preemption system test
> --------------------------------------------------
>
>                 Key: MAPREDUCE-2051
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2051
>             Project: Hadoop Map/Reduce
>          Issue Type: Test
>          Components: contrib/fair-share
>    Affects Versions: 0.22.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>             Fix For: 0.22.0
>
>         Attachments: mapreduce-2051.txt
>
>
> We've seen a number of bugs in the fair share scheduler not caught by its unit tests,
which are heavily mock-based. This JIRA is to add an integration/system/stress test for the
fairshare scheduler. This test can help identify races and deadlocks, and when run within
the jcarder framework has identified several potential deadlocks for us that aren't turned
up running small scale testing.

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