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https://issues.apache.org/jira/browse/MAPREDUCE-146?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer resolved MAPREDUCE-146.
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Resolution: Not a Problem
With split calculations moved and job submission changed, this is no longer a
problem. Closing.
> Stale job files in mapred system directory
> ------------------------------------------
>
> Key: MAPREDUCE-146
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-146
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Vinod Kumar Vavilapalli
>
> In one scenario, job client uploaded the job split file and job jar onto the
> mapred system directory but got killed before the actual job got submitted
> and/or before the job got known to the JT. In such situations, the split and
> jar files are left as garbage as JT doesn't know of the job yet. On a long
> running JT, this garbage can accumulate.
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