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https://issues.apache.org/jira/browse/MAPREDUCE-2584?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13508507#comment-13508507
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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/12555708/MAPREDUCE-2584.r9.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-common-project/hadoop-common
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/3093//testReport/
Console output:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/3093//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, MAPREDUCE-2584.r8.diff,
> MAPREDUCE-2584.r9.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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