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https://issues.apache.org/jira/browse/MAPREDUCE-2180?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12993937#comment-12993937
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Hudson commented on MAPREDUCE-2180:
-----------------------------------
Integrated in Hadoop-Mapreduce-22-branch #33 (See
[https://hudson.apache.org/hudson/job/Hadoop-Mapreduce-22-branch/33/])
> Add coverage of fair scheduler servlet to system test
> -----------------------------------------------------
>
> Key: MAPREDUCE-2180
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2180
> Project: Hadoop Map/Reduce
> Issue Type: Test
> Components: contrib/fair-share
> Affects Versions: 0.22.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Minor
> Fix For: 0.22.0
>
> Attachments: mapreduce-2180.txt
>
>
> MAPREDUCE-2051 added a system test for the fair scheduler which starts a
> minicluster and runs a couple jobs with preemption on. I recently found a
> deadlock in a previous version of the scheduler that was due to lock
> inversion between the scheduler servlet and some JT internals. I'd like to
> modify the existing system test to also hit the /scheduler servlet, allowing
> jcarder to detect such lock inversions in the future.
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