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https://issues.apache.org/jira/browse/MAPREDUCE-1940?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12901651#action_12901651
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Dick King commented on MAPREDUCE-1940:
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This design is consistent with the normal design of CLI tools where input and 
output are mandatory.

> [Rumen] Add appropriate switches to Folder and TraceBuilder w.r.t input and 
> output files
> ----------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-1940
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1940
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: tools/rumen
>            Reporter: Amar Kamat
>
> Currently Folder and TraceBuilder expect the input and output to be the last 
> arguments in the command line. It would be better to add special switches to 
> the input and output files to avoid confusion.

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