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https://issues.apache.org/jira/browse/MAPREDUCE-5813?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13954654#comment-13954654
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Hudson commented on MAPREDUCE-5813:
-----------------------------------
SUCCESS: Integrated in Hadoop-Yarn-trunk #524 (See
[https://builds.apache.org/job/Hadoop-Yarn-trunk/524/])
MAPREDUCE-5813. Fix YarnChild to explicitly load job.xml from the
local-filesystem, rather than rely on the classpath. Contributed by Gera
Shegalov. (acmurthy:
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1583050)
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
*
/hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapred/YarnChild.java
*
/hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/v2/TestMRJobs.java
> 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
> Fix For: 2.4.0
>
> 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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