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https://issues.apache.org/jira/browse/HADOOP-3581?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinod Kumar Vavilapalli updated HADOOP-3581:
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Attachment: patch_3581_4.3.txt
Attaching a new patch.
- Added a test case that creates a "rogue task", verifies it goes beyond a
certain limit, kill it, and asserts that it is killed properly.
- Moved ProcessTree, ProcfsBasedProcessTree and ProcInfo to
org.apache.hadoop.util
- Changed all methods in ProcessTree to be abstract methods.
> Prevent memory intensive user tasks from taking down nodes
> ----------------------------------------------------------
>
> Key: HADOOP-3581
> URL: https://issues.apache.org/jira/browse/HADOOP-3581
> Project: Hadoop Core
> Issue Type: Improvement
> Components: mapred
> Reporter: Hemanth Yamijala
> Assignee: Vinod Kumar Vavilapalli
> Attachments: patch_3581_0.1.txt, patch_3581_3.3.txt,
> patch_3581_4.3.txt
>
>
> Sometimes user Map/Reduce applications can get extremely memory intensive,
> maybe due to some inadvertent bugs in the user code, or the amount of data
> processed. When this happens, the user tasks start to interfere with the
> proper execution of other processes on the node, including other Hadoop
> daemons like the DataNode and TaskTracker. Thus, the node would become
> unusable for any Hadoop tasks. There should be a way to prevent such tasks
> from bringing down the node.
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