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Posted to mapreduce-dev@hadoop.apache.org by "Eli Collins (JIRA)" <ji...@apache.org> on 2010/05/12 21:28:43 UTC

[jira] Created: (MAPREDUCE-1785) Add streaming config option for not emitting the key

Add streaming config option for not emitting the key
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                 Key: MAPREDUCE-1785
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1785
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
          Components: contrib/streaming
    Affects Versions: 0.22.0
            Reporter: Eli Collins
            Assignee: Eli Collins
            Priority: Minor
             Fix For: 0.22.0


PipeMapper currently does not emit the key when using TextInputFormat. If you switch to input formats (eg LzoTextInputFormat) the key will be emitted. We should add an option so users can explicitly make streaming not emit the key so they can change input formats without breaking or having to modify their existing programs.

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