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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