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https://issues.apache.org/jira/browse/HADOOP-1351?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Enis Soztutar updated HADOOP-1351:
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Attachment: killTask_v1.9.patch
After a discussion with Arun in #hadoop, we have decided the following
- It may cause to log killing tasks preemptive, so we log a request to kill
the task, than log the task as killed once TT reports so (two log entries per
action).
- changed {{JobSubmissionProtocol#killTask()}} to return {{boolean}} to
indicate success. Of course since killing task is async, true may not mean the
task is really killed if the cluster is in an unstable state.
- adding user name to kill task log/diagnostic message. (not implemented,
taking user name as a parameter in JobSubmissionProtocol did not seem good
enough ).
- passing the cause to kill the job to TT, in order to log it (not implemented
since again, i am not fond of extending function signatures just to improve
logging)
- change {{JobSubmissionProtocol#killJob() to return boolean}} - Will open a
new issue for this.
> Want to kill a particular task or attempt
> -----------------------------------------
>
> Key: HADOOP-1351
> URL: https://issues.apache.org/jira/browse/HADOOP-1351
> Project: Hadoop
> Issue Type: New Feature
> Components: mapred
> Affects Versions: 0.15.0
> Reporter: Owen O'Malley
> Assignee: Enis Soztutar
> Fix For: 0.15.0
>
> Attachments: killTask_v1.0.1.patch, killTask_v1.2.patch,
> killTask_v1.3.patch, killTask_v1.4.patch, killTask_v1.5.patch,
> killTask_v1.6.patch, killTask_v1.7.patch, killTask_v1.8.patch,
> killTask_v1.9.patch
>
>
> It would be convenient to be able to kill a particular task or attempt from
> the command line. It would look like:
> bin/hadoop job -kill-task tip_0001_m_000000
> bin/hadoop job -kill-attempt task_0001_m_000000_0
> This would allow the user to tell the system to stop a particular task or
> attempt without having to restart a task tracker.
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