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

["Gera Shegalov (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAPREDUCE-5813?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gera Shegalov reassigned MAPREDUCE-5813:
----------------------------------------

    Assignee: Gera Shegalov

> 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
>
> {{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.



--
This message was sent by Atlassian JIRA
(v6.2#6252)