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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MAPREDUCE-2051) Contribute a fair scheduler preemption system test
Date Fri, 03 Sep 2010 00:11:32 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-2051?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Todd Lipcon updated MAPREDUCE-2051:
-----------------------------------

    Attachment: mapreduce-2051.txt

> 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
>         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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