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https://issues.apache.org/jira/browse/MAPREDUCE-1506?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aaron Kimball updated MAPREDUCE-1506:
-------------------------------------

    Attachment: TEST-org.apache.hadoop.mapred.TestTaskTrackerMemoryManager.txt

Attaching an example failed trace. Note that the particular test case which 
fails may vary, but it's always the assert at line 281.

> Assertion failure in TestTaskTrackerMemoryManager
> -------------------------------------------------
>
>                 Key: MAPREDUCE-1506
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1506
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>            Reporter: Aaron Kimball
>         Attachments: 
> TEST-org.apache.hadoop.mapred.TestTaskTrackerMemoryManager.txt
>
>
> With asserts enabled, TestTaskTrackerMemoryManager sometimes fails. From what 
> I've inspected, it's because some tasks are marked as FAILED/TIPFAILED while 
> others are marked SUCCEEDED.
> This can be reproduced by applying MAPREDUCE-1092 and then running {{ant 
> clean test -Dtestcase=TestTaskTrackerMemoryManager}}

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