[jira] [Commented] (MAPREDUCE-5813) YarnChild does not load job.xml with mapreduce.job.classloader=true

["Hadoop QA (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5813?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13949288#comment-13949288 ] 

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/12637128/MAPREDUCE-5813.v01.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:red}-1 tests included{color}.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    {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:

                  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/4464//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/4464//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
>
>
> {{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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