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https://issues.apache.org/jira/browse/MAPREDUCE-1978?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12918829#action_12918829
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Ravi Gummadi commented on MAPREDUCE-1978:
-----------------------------------------

-r is not descriptive enough compared to -recursive. May be later we could 
think of supporting "-R" in addition to -recursive, if needed.

> [Rumen] TraceBuilder should provide recursive input folder scanning
> -------------------------------------------------------------------
>
>                 Key: MAPREDUCE-1978
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1978
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: tools/rumen
>            Reporter: Amar Kamat
>            Assignee: Ravi Gummadi
>         Attachments: 1978.patch
>
>
> Currently, {{TraceBuilder}} assumes that the input is either jobhistory files 
> or a folders containing jobhistory files directly underneath the specified 
> folder. There could be a use cases where the input folder could contain 
> sub-folders containing jobhistory files. Rumen should support such input 
> folders.

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