balancer fails with "is not authorized for protocol interface NamenodeProtocol" 
in secure environment
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                 Key: HADOOP-6647
                 URL: https://issues.apache.org/jira/browse/HADOOP-6647
             Project: Hadoop Common
          Issue Type: Bug
            Reporter: Boris Shkolnik


user logs in as hdfs/dev.ygrid.yahoo....@dev.ygrid.yahoo.com and tries to run 
balancer.
balancer is using NameNode Protocol which authorizes based on server principal 
key.
but NameNode key is hdfs/_h...@.. now. so it fails. 
To fix we need to compare the short names only.

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