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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1351) Want to kill a particular task or attempt
Date Tue, 24 Jul 2007 06:49:31 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12514875
] 

Arun C Murthy commented on HADOOP-1351:
---------------------------------------

Sorry I've been busy with others and forgot about this.... didnt' mean to hold it up.

bq. We need to store the info that some task is killed so that we can send a KillTaskAction
to the TT.

No question. I was only suggesting that we use the already existing {{taskReportedClosed}}
list rather than introduce a new {{tasksToKill}} set...

bq. It is unfortunate that we cannot agree with Arun on this issue, so i wonder what do the
other developers think.
I agree, Doug/Owen your take? We just agree to disagree...

bq. another configuration option? Hell no! .smile.

I believe Doug is suggesting a -kill-task and a -fail-task flag... which might be useful post
HADOOP-1144. 

I couldn't agree more with your sentiments about config options! *smile*

> 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
>
>
> 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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