Unit tests should not cleanup created files in /tmp. It causes tests to fail if 
more than one users run tests on same machine. 
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                 Key: HADOOP-761
                 URL: http://issues.apache.org/jira/browse/HADOOP-761
             Project: Hadoop
          Issue Type: Bug
          Components: test
            Reporter: Sanjay Dahiya
            Priority: Minor


TestMiniMRLocalFS  test cases creates /tmp/wc/input/, which is not cleaned up, 
any other user running test on same machine simultaneously or later will see 
test failures. 
It should either use a temp directory in the build/test or use java's 
File.createTempFile method for temporary data and then clean it up. 

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