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https://issues.apache.org/jira/browse/HADOOP-5883?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12718617#action_12718617
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Hudson commented on HADOOP-5883:
--------------------------------
Integrated in Hadoop-trunk #863 (See
[http://hudson.zones.apache.org/hudson/job/Hadoop-trunk/863/])
> TaskMemoryMonitorThread might shoot down tasks even if their processes
> momentarily exceed the requested memory
> --------------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-5883
> URL: https://issues.apache.org/jira/browse/HADOOP-5883
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Reporter: Hemanth Yamijala
> Assignee: Hemanth Yamijala
> Fix For: 0.20.1
>
> Attachments: HADOOP-5883-20.patch, HADOOP-5883-20.patch,
> HADOOP-5883.patch, HADOOP-5883.patch, HADOOP-5883.patch
>
>
> Currently the TaskMemoryMonitorThread kills tasks as soon as it detects they
> are consuming more memory than the max value specified. There are valid cases
> (see HADOOP-5059) where if a program is executed from the task, it might
> momentarily occupy twice the amount of memory for a short time. Ideally the
> monitoring thread should handle this case.
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