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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 Sun, 07 Oct 2012 14:14:03 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2584?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13471250#comment-13471250
] 

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

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12548162/MAPREDUCE-2584.r7.diff
  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 1 new or modified
test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:red}-1 core tests{color}.  The patch failed these unit tests in hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient:

                  org.apache.hadoop.conf.TestNoDefaultsJobConf

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2914//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2914//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
>         Attachments: MAPREDUCE-2584.r2.diff, MAPREDUCE-2584.r3.diff, MAPREDUCE-2584.r4.diff,
MAPREDUCE-2584.r5.diff, MAPREDUCE-2584.r6.diff, MAPREDUCE-2584.r7.diff, MAPREDUCE-2584.r7.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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