[MAPREDUCE-7352] ArithmeticException in some MapReduce tests

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Component/s: test
• Assignee: Peter Bacsko
• Reporter: Peter Bacsko
• Created: 14/Jun/21 12:53
• Updated: 14/Jun/21 12:57
• Resolved: 14/Jun/21 12:57

Description

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

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)

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.

Issue Links

• duplicates: YARN-9817 Fix failing testcases due to not initialized AsyncDispatcher - ArithmeticException: / by zero