Daryn Sharp created HADOOP-8725:
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             Summary: MR is broken when security is off
                 Key: HADOOP-8725
                 URL: https://issues.apache.org/jira/browse/HADOOP-8725
             Project: Hadoop Common
          Issue Type: Bug
          Components: security
    Affects Versions: 0.23.3, 2.1.0-alpha, 3.0.0
            Reporter: Daryn Sharp
            Assignee: Daryn Sharp
            Priority: Blocker


HADOOP-8225 broke MR when security is off.  MR was changed to stop re-reading 
the credentials that UGI had already read, and to stop putting those tokens 
back into the UGI where they already were.  UGI only reads a credentials file 
when security is enabled, but MR uses tokens (ie. job token) even when security 
is disabled...

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