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From "Amar Kamat (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-5449) Verify if JobHistory.HistoryCleaner works as expected
Date Tue, 10 Mar 2009 07:38:50 GMT
Verify if JobHistory.HistoryCleaner works as expected
-----------------------------------------------------

                 Key: HADOOP-5449
                 URL: https://issues.apache.org/jira/browse/HADOOP-5449
             Project: Hadoop Core
          Issue Type: Bug
          Components: mapred
            Reporter: Amar Kamat


Here is the piece of code I doubt
{code}
public void run(){
      if (isRunning){
        return;
      }
      now = System.currentTimeMillis();
      // clean history only once a day at max
      if (lastRan ==0 || (now - lastRan) < ONE_DAY_IN_MS){
        return;
      }
      lastRan = now;
.....
// main code for cleaning
}
{code}
{{lastRun}} is initialized to 0 and hence HistoryCleaner will never execute the main code.
Also a testcase should be written for JobHistory.HistoryCleaner to check if it works as expected.


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