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Posted to mapreduce-issues@hadoop.apache.org by "Arun C Murthy (JIRA)" <ji...@apache.org> on 2012/10/11 19:25:03 UTC

[jira] [Updated] (MAPREDUCE-4616) Improvement to MultipleOutputs javadocs

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4616?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arun C Murthy updated MAPREDUCE-4616:
-------------------------------------

       Resolution: Fixed
    Fix Version/s: 2.0.3-alpha
           Status: Resolved  (was: Patch Available)

I just committed this. Thanks Tony!

(Having trouble adding you to contributors list on jira. I'll fix the assignee asap! Sorry!)
                
> 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
>             Fix For: 2.0.3-alpha
>
>         Attachments: MAPREDUCE-4616.patch, 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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