GenericOptionsParser ought to have better options parsing, and not pick only 
the options in the front
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                 Key: HADOOP-7995
                 URL: https://issues.apache.org/jira/browse/HADOOP-7995
             Project: Hadoop Common
          Issue Type: Improvement
          Components: util
    Affects Versions: 0.23.0
            Reporter: Harsh J
            Priority: Minor


The ToolRunner provided GenericOptionsParser stops parsing known options when 
it encounters the first unknown option string in the String[] today.

Ideally we should have it be more intelligent and sift through the whole array 
to pick up all opts, and not just the opts that are at the front of the invoked 
CLI.

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