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https://issues.apache.org/jira/browse/MAPREDUCE-5935?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jinghui Wang updated MAPREDUCE-5935:
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Attachment: MAPREDUCE-5935.patch
> TestMRServerPorts#testTaskTrackerPorts fails with null pointer exception.
> -------------------------------------------------------------------------
>
> Key: MAPREDUCE-5935
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5935
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: test
> Affects Versions: 1.1.1, 1.2.0, 1.2.1
> Reporter: Jinghui Wang
> Assignee: Jinghui Wang
> Fix For: 1.2.2
>
> Attachments: MAPREDUCE-5935.patch
>
>
> The exception is caused by a race condition. The test case calls
> Jobtracker.offerservice in a seperate thread JTRunner, which initializes the
> class variable FileSystem fs. In the main thread it tries to close fs in the
> finally block of code, but at that point jt.fs might still not be
> initialized, thus causing the NPE.
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