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https://issues.apache.org/jira/browse/HADOOP-5004?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12662944#action_12662944
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Steve Loughran commented on HADOOP-5004:
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we'd need JobTracker.killJob() to return something other than void() in such a
situation, or throw a subclass of IOException.
Having the client look for the job and failing if it is not there would leave
open a race condition.
> 'job -kill' from command line should inform if the job doesn't exist
> --------------------------------------------------------------------
>
> Key: HADOOP-5004
> URL: https://issues.apache.org/jira/browse/HADOOP-5004
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Affects Versions: 0.21.0
> Reporter: Amar Kamat
> Fix For: 0.21.0
>
>
> Killing an invalid job from command line succeeds with a message stating "job
> killed".
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