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From "Peter Bacsko (Jira)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-7352) ArithmeticException in some MapReduce tests
Date Mon, 14 Jun 2021 12:57:00 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-7352?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17362939#comment-17362939
] 

Peter Bacsko commented on MAPREDUCE-7352:
-----------------------------------------

OK, just seen that this was fixed a long time ago. I was on the wrong branch.

> 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
>            Priority: Major
>
> 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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