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https://issues.apache.org/jira/browse/MAPREDUCE-1785?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Amareshwari Sriramadasu updated MAPREDUCE-1785:
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Release Note: Added a configuration property "stream.map.input.ignoreKey"
to specify whether to ignore key or not while reading input.
> 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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