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From "Alejandro Abdelnur (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5113) Streaming fails to set output key class when reducer is java class
Date Mon, 01 Apr 2013 21:27:16 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5113?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13619190#comment-13619190
] 

Alejandro Abdelnur commented on MAPREDUCE-5113:
-----------------------------------------------

+1, it may be relevant after all. Please update summary/description to reflect exact change.
                
> Streaming fails to set output key class when reducer is java class
> ------------------------------------------------------------------
>
>                 Key: MAPREDUCE-5113
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5113
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 2.0.2-alpha
>            Reporter: Sandy Ryza
>            Assignee: Sandy Ryza
>         Attachments: HADOOP-9300-1.patch, HADOOP-9300-2.patch, HADOOP-9300-2.patch, HADOOP-9300-2.patch,
HADOOP-9300-3.patch, HADOOP-9300.patch, HADOOP-9300.patch, MAPREDUCE-5113.patch
>
>
> In an effort to avoid overwriting user configs (MAPREDUCE-1888), StreamJob doesn't set
a job's output key/value classes unless they are specified in the streaming command line.
 If the configs aren't specified in either of these places, the streaming defaults (Text)
no longer kick in, and the global default LongWritable is used.
> This can cause jobs/output writers that are expecting Text to fail.

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