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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:
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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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