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From "Amareshwari Sriramadasu (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MAPREDUCE-1785) Add streaming config option for not emitting the key
Date Tue, 08 Jun 2010 05:13:11 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-1785?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Amareshwari Sriramadasu updated MAPREDUCE-1785:
-----------------------------------------------

    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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