DistributedCache add(File|Archive)ToClassPath should only use FileSystem if 
path is not fully qualified
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                 Key: HADOOP-6739
                 URL: https://issues.apache.org/jira/browse/HADOOP-6739
             Project: Hadoop Common
          Issue Type: Improvement
            Reporter: Alejandro Abdelnur


Currently setting a file/archive in the DistributedCache classpath creates a 
FileSystem instance to fully qualify the path, even if the path given is 
already fully qualified.

This forces a connection to the cluster.

The methods should check if the path is already fully qualified and if so it 
should not create a FileSystem instance and try to qualify the path.

This would allow creating a jobconf in disconnected mode until submission time.

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