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Posted to mapreduce-dev@hadoop.apache.org by "Rohith Sharma K S (JIRA)" <ji...@apache.org> on 2018/02/19 14:59:00 UTC

[jira] [Resolved] (MAPREDUCE-7055) MR jobs are failing with Could not find or load main class for MRAppMaster

     [ https://issues.apache.org/jira/browse/MAPREDUCE-7055?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rohith Sharma K S resolved MAPREDUCE-7055.
------------------------------------------
    Resolution: Resolved

Closing this JIRA as Resolved since YARN-7677 is reverted.

> 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
>         Attachments: app-logs.zip, conf.zip
>
>
> 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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