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https://issues.apache.org/jira/browse/MAPREDUCE-158?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12846753#action_12846753
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Amareshwari Sriramadasu commented on MAPREDUCE-158:
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This issue doesn't exist any more, because MAPREDUCE-927 solves this by 
modifying "mapred.userlog.retain.hours" to specify the time(in hours) for which 
the user-logs are to be retained after the job completion.

> mapred.userlog.retain.hours killing long running tasks
> ------------------------------------------------------
>
>                 Key: MAPREDUCE-158
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-158
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: tasktracker
>         Environment: 0.19.2-dev, r753365 
>            Reporter: Billy Pearson
>         Attachments: hadoop-5600.patch
>
>
> One can reproduce the scenario by configuring mapred.userlog.retain.hours to 
> 1hr, and running tasks that take more than an hour.
> More info on closed ticket HADOOP-5591.

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