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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2584) Check for serializers early, and give out more information regarding missing serializers
Date Mon, 27 Jun 2011 13:19:48 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2584?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13055533#comment-13055533
] 

Hadoop QA commented on MAPREDUCE-2584:
--------------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12483921/MAPREDUCE-2584.r4.diff
  against trunk revision 1139400.

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

    +1 tests included.  The patch appears to include 3 new or modified tests.

    +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.cli.TestMRCLI
                  org.apache.hadoop.fs.TestFileSystem
                  org.apache.hadoop.mapred.TestJobClient
                  org.apache.hadoop.mapred.TestMiniMRClasspath
                  org.apache.hadoop.mapreduce.TestMRJobClient

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

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

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/428//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/428//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/428//console

This message is automatically generated.

> Check for serializers early, and give out more information regarding missing serializers
> ----------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-2584
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2584
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: task
>    Affects Versions: 0.20.2
>            Reporter: Harsh J
>            Assignee: Harsh J
>              Labels: serializers, tasks
>             Fix For: 0.23.0
>
>         Attachments: MAPREDUCE-2584.r2.diff, MAPREDUCE-2584.r3.diff, MAPREDUCE-2584.r4.diff
>
>
> As discussed on HADOOP-7328, MapReduce can handle serializers in a much better way in
case of bad configuration, improper imports (Some odd Text class instead of the Writable Text
set as key), etc..
> This issue covers the MapReduce parts of the improvements (made to IFile, MapOutputBuffer,
etc. and possible early-check of serializer availability pre-submit) that provide more information
than just an NPE as is the current case.

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