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Date: Wed, 12 Sep 2012 02:39:08 +1100 (NCT)
From: "Tony Burton (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
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Subject: [jira] [Updated] (MAPREDUCE-4616) Improvement to MultipleOutputs
 javadocs
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     [ https://issues.apache.org/jira/browse/MAPREDUCE-4616?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tony Burton updated MAPREDUCE-4616:
-----------------------------------

    Status: Patch Available  (was: Open)

Documentation changes to describe how to use MultipleOutputs and LazyOutputFormat to mimic behaviour in the now-deprecated MultipleTextOutputFormat (and similar)
                
> Improvement to MultipleOutputs javadocs
> ---------------------------------------
>
>                 Key: MAPREDUCE-4616
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4616
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: documentation
>    Affects Versions: 1.0.3
>            Reporter: Tony Burton
>            Priority: Minor
>              Labels: hadoop, mapreduce
>             Fix For: trunk
>
>         Attachments: MAPREDUCE-4616.patch
>
>
> In the new API, and using MultipleOutputs it is possible to segment output into directories by using MultipleOutputs.write(KEYOUT key, VALUEOUT value, String baseOutputPath) in the Reducer to determine the output directory, and by using LazyOutputFormat at the job-level config to suppress normal output [eg use LazyOutputFormat.setOutputFormatClass(job, TextOutputFormat.class); instead of job.setOutputFormatClass(TextOutputFormat.class);]
> This recreates the functionality previously provided in the old API by using MultipleTextOutputFormat (etc)

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