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https://issues.apache.org/jira/browse/MAPREDUCE-450?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Amareshwari Sriramadasu resolved MAPREDUCE-450.
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    Resolution: Duplicate

This functionality is provided by OutputCommitter. See HADOOP-3150

> OutputFormat should have a "close" method called after all the reducers have 
> completed
> --------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-450
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-450
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>            Reporter: Nathan Marz
>            Priority: Minor
>
> It would be very useful for OutputFormat's to have a "close" method so that 
> any global logic for outputting can take place there. For example, to output 
> a meta data file along with all the reduce outputs. The close method should 
> have the following signature and be run after all the reducers have finished, 
> but before the "work output path" is renamed to the final output path:
> void close(FileSystem fs, JobConf job, Progressable progress) throws 
> IOException

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