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https://issues.apache.org/jira/browse/MAPREDUCE-370?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12746816#action_12746816
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Tom White commented on MAPREDUCE-370:
-------------------------------------

bq. I think these users can override FileOutputFormat.getDefaultWorkFile to 
control the precise filename.

This is true. So to have complete control over the output filename you would 
call the write method with a base output path of the name you want (possibly 
using the key and value to construct it). You would then override 
FileOutputFormat.getDefaultWorkFile() to omit the {m,r}-nnnnn suffix.

We could make this slightly easier in the future perhaps (by putting it in the 
MultipleOutputs API, for example), but I think the current approach is 
reasonable.

> Change org.apache.hadoop.mapred.lib.MultipleOutputs to use new api.
> -------------------------------------------------------------------
>
>                 Key: MAPREDUCE-370
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-370
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>            Reporter: Amareshwari Sriramadasu
>            Assignee: Amareshwari Sriramadasu
>             Fix For: 0.21.0
>
>         Attachments: patch-370-1.txt, patch-370-2.txt, patch-370.txt
>
>


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