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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-1242) Chain APIs error misleading
Date Mon, 28 Feb 2011 16:37:36 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13000382#comment-13000382
] 

Hadoop QA commented on MAPREDUCE-1242:
--------------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12468867/MAPREDUCE-1242.r2.patch
  against trunk revision 1075216.

    +1 @author.  The patch does not contain any @author tags.

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit
warnings.

    -1 core tests.  The patch failed these core unit tests:
                  org.apache.hadoop.mapreduce.lib.input.TestCombineFileInputFormat

    -1 contrib tests.  The patch failed contrib unit tests.

    +1 system test framework.  The patch passed system test framework compile.

Test results: https://hudson.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/89//testReport/
Findbugs warnings: https://hudson.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/89//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: https://hudson.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/89//console

This message is automatically generated.

> Chain APIs error misleading
> ---------------------------
>
>                 Key: MAPREDUCE-1242
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1242
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 0.20.2
>            Reporter: Amogh Vasekar
>            Assignee: Harsh J Chouraria
>            Priority: Trivial
>             Fix For: 0.22.0
>
>         Attachments: MAPREDUCE-1242.patch, MAPREDUCE-1242.r2.patch
>
>
> Hi,
> I was using the Chain[Mapper/Reducer] APIs , and in Class Chain line 207 the error thrown
: 
> "The Mapper output key class does not match the previous Mapper input key class"
> Shouldn't this be "The Mapper *input* key class does not match the previous Mapper *Output*
key class" ? Sort of misleads :) 

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