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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5813) YarnChild does not load job.xml with mapreduce.job.classloader=true
Date Sat, 29 Mar 2014 14:07:15 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5813?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13954268#comment-13954268
] 

Hadoop QA commented on MAPREDUCE-5813:
--------------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12637623/MAPREDUCE-5813.v02.patch
  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}.  There were no new javadoc 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-app
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient:

                  org.apache.hadoop.mapreduce.v2.app.TestMRAppMaster

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

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/4468//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/4468//console

This message is automatically generated.

> YarnChild does not load job.xml with mapreduce.job.classloader=true 
> --------------------------------------------------------------------
>
>                 Key: MAPREDUCE-5813
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5813
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2, task
>    Affects Versions: 2.3.0
>            Reporter: Gera Shegalov
>            Assignee: Gera Shegalov
>            Priority: Blocker
>         Attachments: MAPREDUCE-5813.v01.patch, MAPREDUCE-5813.v02.patch
>
>
> {{YarnChild.main}} uses {{JobConf.addResource(String)}} to load {{job.xml}} that relies
on class loading. When {{mapreduce.job.classloader=true}} the job-speicific part of the class
path is separated from {{CLASSPATH}} into {{APP_CLASSPATH}}. Therefore {{job.xml}} is inaccessible
for the default class loader. Later {{writeLocalJobFile}} overwrites the correct localized
{{job.xml}} on disk as well.
> This problem is easily avoided by using  {{JobConf.addResource(Path)}} to read the localized
{{job.xml}} without relying on class loading.



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