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From "Rohith Sharma K S (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-7055) MR jobs are failing with Could not find or load main class for MRAppMaster
Date Sun, 18 Feb 2018 07:20:00 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-7055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16368456#comment-16368456
] 

Rohith Sharma K S commented on MAPREDUCE-7055:
----------------------------------------------

I verified in trunk deploying manually and seeing this error. It appears something gone wrong
in recent commits

> MR jobs are failing with Could not find or load main class for MRAppMaster
> --------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-7055
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-7055
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 3.1.0, 3.2.0
>            Reporter: Rohith Sharma K S
>            Priority: Blocker
>
> It is observed that MR jobs are failing with *Error: Could not find or load main class
org.apache.hadoop.mapreduce.v2.app.MRAppMaster" even though HADOOP_MAPRED_HOME is set in mapred-site.xml
> Tried building tar.gz in branch-3.0 and seems works fine with same configurations. But
in branch-3.1 and trunk, it is failing. I got launch_container.sh for both  and compared classpath
 exported before launching AM. Both classpath entries are same, but AM launching is failing
with above mentioned error. 
> Its better to confirm as 3.1 release is going to happen soon.



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