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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9300) Streaming fails to set output key class when reducer is java class
Date Wed, 13 Feb 2013 01:08:11 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9300?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13577245#comment-13577245

Hadoop QA commented on HADOOP-9300:

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 2 new or modified
test files.

    {color:red}-1 javac{color:red}.  The patch appears to cause the build to fail.

Console output: https://builds.apache.org/job/PreCommit-HADOOP-Build/2182//console

This message is automatically generated.
> Streaming fails to set output key class when reducer is java class
> ------------------------------------------------------------------
>                 Key: HADOOP-9300
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9300
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: tools
>    Affects Versions: 2.0.2-alpha
>            Reporter: Sandy Ryza
>            Assignee: Sandy Ryza
>         Attachments: HADOOP-9300.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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