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From "Balaji Rajagopalan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-1693) Process tree clean up of either a failed task or killed task tests.
Date Wed, 14 Apr 2010 10:48:49 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1693?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12856830#action_12856830
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Balaji Rajagopalan commented on MAPREDUCE-1693:
-----------------------------------------------

One other comment,
5. There is no need to pass the child process id , given the attempt id of the process tree
api will do the work to check for the given attempt all the child process associated with
parent is alive or not. 

> Process tree clean up of either a failed task or killed task tests.
> -------------------------------------------------------------------
>
>                 Key: MAPREDUCE-1693
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1693
>             Project: Hadoop Map/Reduce
>          Issue Type: Task
>          Components: test
>            Reporter: Vinay Kumar Thota
>            Assignee: Vinay Kumar Thota
>         Attachments: taskchildskilling_1693.diff, taskchildskilling_1693.diff, taskchildskilling_1693.patch
>
>
> The following scenarios covered in the test.
> 1. Run a job which spawns subshells in the tasks. Kill one of the task. All the child
process of the killed task must be killed.
> 2. Run a job which spawns subshells in tasks. Fail one of the task. All the child process
of the killed task must be killed along with the task after its failure.
> 3. Check process tree cleanup on paritcular task-tracker when we use -kill-task and -fail-task
with both map and reduce.
> 4. Submit a job which would spawn child processes and each of the child processes exceeds
the memory limits. Let the job complete . Check if all the child processes are killed, the
overall job should fail.
> l)Submit a job which would spawn child processes and each of the child processes exceeds
the memory limits. Kill/fail the job while in progress. Check if all the child processes are
killed.

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