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https://issues.apache.org/jira/browse/MAPREDUCE-6401?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14589373#comment-14589373
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Devaraj K commented on MAPREDUCE-6401:
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Have you checked the container/task logs? You could probably find the reason
for this failure in the task logs.
> Container-launch failure gives no debugging output
> --------------------------------------------------
>
> Key: MAPREDUCE-6401
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6401
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Affects Versions: 2.6.0
> Environment: HDP 2.2
> Reporter: Hari Sekhon
> Attachments: job.log
>
>
> MR jobs are failing on my cluster with Stack trace: ExitCodeException
> exitCode=7 but little else in terms of debugging information. Can we please
> improve the debugging info? Log file is attached.
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