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From "Peter Bacsko (Jira)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-7352) ArithmeticException in some MapReduce tests
Date Mon, 14 Jun 2021 12:54:00 GMT
Peter Bacsko created MAPREDUCE-7352:
---------------------------------------

             Summary: ArithmeticException in some MapReduce tests
                 Key: MAPREDUCE-7352
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-7352
             Project: Hadoop Map/Reduce
          Issue Type: Task
          Components: test
            Reporter: Peter Bacsko
            Assignee: Peter Bacsko


There are some ArithmeticException failures in certain MapReduce test cases, for example:

{noformat}
2021-06-14 14:14:20,078 INFO  [main] service.AbstractService (AbstractService.java:noteFailure(267))
- Service org.apache.hadoop.mapreduce.v2.app.MRAppMaster failed in state STARTED
java.lang.ArithmeticException: / by zero
	at org.apache.hadoop.yarn.event.AsyncDispatcher$GenericEventHandler.handle(AsyncDispatcher.java:304)
	at org.apache.hadoop.mapreduce.v2.app.job.impl.JobImpl.handle(JobImpl.java:1015)
	at org.apache.hadoop.mapreduce.v2.app.job.impl.JobImpl.handle(JobImpl.java:141)
	at org.apache.hadoop.mapreduce.v2.app.MRAppMaster$JobEventDispatcher.handle(MRAppMaster.java:1544)
	at org.apache.hadoop.mapreduce.v2.app.MRAppMaster.serviceStart(MRAppMaster.java:1263)
	at org.apache.hadoop.service.AbstractService.start(AbstractService.java:194)
	at org.apache.hadoop.mapreduce.v2.app.MRApp.submit(MRApp.java:301)
	at org.apache.hadoop.mapreduce.v2.app.MRApp.submit(MRApp.java:285)
	at org.apache.hadoop.mapreduce.v2.app.TestMRApp.testUpdatedNodes(TestMRApp.java:223)
{noformat}

We have to set {{detailsInterval}} when the async dispatcher is spied. For some reason, despite
the fact that {{serviceInit()}} is called, this variable remains zero.



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