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https://issues.apache.org/jira/browse/MAPREDUCE-7135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16608975#comment-16608975
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Oleksandr Shevchenko commented on MAPREDUCE-7135:
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!image-2018-09-10-13-23-46-533.png!
> TestTaskAttemptContainerRequest should reset UserGroupInformation
> -----------------------------------------------------------------
>
> Key: MAPREDUCE-7135
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-7135
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: test
> Reporter: Oleksandr Shevchenko
> Priority: Minor
> Attachments: image-2018-09-10-13-23-46-533.png
>
>
> TestTaskAttemptContainerRequest should reset UserGroupInformation after end
> since this test cache UserGroupInformation and can be cause of other test
> fail. For example, all test in TestRMContainerAllocator will be failed if we
> run these tests after TestTaskAttemptContainerRequest (or we can change
> "UserGroupInformation.setLoginUser(null)" with UserGroupInformation.reset()
> in this class).
> Also, I think the WARNING message in TestTaskAttemptContainerRequest can be
> removed since we can reset UserGroupInformation after each test.
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