[jira] [Created] (YARN-4480) Clean up some inappropriate imports

[Kai Zheng (JIRA)]

Kai Zheng created YARN-4480:
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             Summary: Clean up some inappropriate imports
                 Key: YARN-4480
                 URL: https://issues.apache.org/jira/browse/YARN-4480
             Project: Hadoop YARN
          Issue Type: Improvement
            Reporter: Kai Zheng


It was noticed there are some unnecessary dependency into Directory classes.



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