MR AM should not read the username from configuration
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Key: MAPREDUCE-3280
URL: https://issues.apache.org/jira/browse/MAPREDUCE-3280
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: applicationmaster, mrv2
Affects Versions: 0.23.0
Reporter: Vinod Kumar Vavilapalli
Fix For: 0.23.0
MR AM reads the value for mapreduce.job.user.name from the configuration in
several places. It should instead get the app-submitter name from the RM.
Once that is done, we can remove the default value for mapreduce.job.user.name
from mapred-default.xml
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