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From "arkady borkovsky (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-2277) In Streaming, allow different mappers for different subsets of the input
Date Mon, 26 Nov 2007 17:29:44 GMT
In Streaming, allow different mappers for different subsets of the input
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                 Key: HADOOP-2277
                 URL: https://issues.apache.org/jira/browse/HADOOP-2277
             Project: Hadoop
          Issue Type: Improvement
          Components: contrib/streaming
            Reporter: arkady borkovsky


The command line may look like this:

-mapper mapper-command-1 -input dir11   -mapper mapper-command-2 -input dir22  input -dir21

meaning that map phase will apply mapper-command-1 to part files from dir11, and the part
files from dir22 and dir21 will be processed by mapper-command-2
then all will be shuffled and processed by a single reducer.


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