Jason Lowe created HADOOP-14902:
-----------------------------------

             Summary: LoadGenerator#genFile write close timing is incorrectly 
calculated
                 Key: HADOOP-14902
                 URL: https://issues.apache.org/jira/browse/HADOOP-14902
             Project: Hadoop Common
          Issue Type: Bug
          Components: fs
    Affects Versions: 2.4.0
            Reporter: Jason Lowe


LoadGenerator#genFile's write close timing code looks like the following:
{code}
        startTime = Time.now();
        executionTime[WRITE_CLOSE] += (Time.now() - startTime);
{code}

That code will generate a zero (or near zero) write close timing since it isn't 
actually closing the file in-between timestamp lookups.




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