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From "Miklos Szegedi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-7181) CPUTimeTracker.updateElapsedJiffies can report negative usage
Date Fri, 08 Sep 2017 23:47:00 GMT
Miklos Szegedi created YARN-7181:
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             Summary: CPUTimeTracker.updateElapsedJiffies can report negative usage
                 Key: YARN-7181
                 URL: https://issues.apache.org/jira/browse/YARN-7181
             Project: Hadoop YARN
          Issue Type: Bug
            Reporter: Miklos Szegedi
            Assignee: Miklos Szegedi


It happens, when the process exited and elapsedJiffies becomes 0 again.
{code}
  public void updateElapsedJiffies(BigInteger elapsedJiffies, long newTime) {
    cumulativeCpuTime = elapsedJiffies.multiply(jiffyLengthInMillis);
    sampleTime = newTime;
 }
{code}




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