[ http://issues.apache.org/jira/browse/HADOOP-480?page=all ]
Yoram Arnon updated HADOOP-480:
-------------------------------
Issue Type: Improvement (was: Bug)
> Streaming should support addition output ("side-effect")
> --------------------------------------------------------
>
> Key: HADOOP-480
> URL: http://issues.apache.org/jira/browse/HADOOP-480
> Project: Hadoop
> Issue Type: Improvement
> Components: contrib/streaming
> Reporter: arkady borkovsky
>
> -mapper and/or -reducer may write some files into their working directory.
> It should be possible to specify names of such files to hadoop-streaming
> command so that once a task is done these files are copied into HDFS to a
> task-specific location.
> E.g.
> /user/name/side-output/job-ib/filename.task-id.attempt-id
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