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Posted to mapreduce-issues@hadoop.apache.org by "Tom White (JIRA)" <ji...@apache.org> on 2010/05/14 18:48:42 UTC

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

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1785?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12867556#action_12867556 ] 

Tom White commented on MAPREDUCE-1785:
--------------------------------------

+1

> Add streaming config option for not emitting the key
> ----------------------------------------------------
>
>                 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
>
>         Attachments: mapreduce-1785-1.patch
>
>
> 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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