[YARN-7084] TestSchedulingMonitor#testRMStarts fails sporadically

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.9.0, 2.7.4, 3.0.0-alpha4, 2.8.2
• Fix Version/s: 2.9.0, 2.8.3, 2.7.5, 3.0.0, 3.1.0
• Target Version/s: 2.9.0, 2.8.3, 2.7.5, 3.0.0
• Assignee: Jason Darrell Lowe
• Reporter: Jason Darrell Lowe
• Created: 23/Aug/17 15:43
• Updated: 24/Apr/18 20:56
• Resolved: 29/Sep/17 16:18

Description

TestSchedulingMonitor has been failing sporadically in precommit builds. Failures look like this:

Running org.apache.hadoop.yarn.server.resourcemanager.monitor.TestSchedulingMonitor
Tests run: 1, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 1.802 sec <<< FAILURE! - in org.apache.hadoop.yarn.server.resourcemanager.monitor.TestSchedulingMonitor
testRMStarts(org.apache.hadoop.yarn.server.resourcemanager.monitor.TestSchedulingMonitor)  Time elapsed: 1.728 sec  <<< FAILURE!
org.mockito.exceptions.verification.WantedButNotInvoked: 
Wanted but not invoked:
schedulingEditPolicy.editSchedule();
-> at org.apache.hadoop.yarn.server.resourcemanager.monitor.TestSchedulingMonitor.testRMStarts(TestSchedulingMonitor.java:58)

However, there were other interactions with this mock:
-> at org.apache.hadoop.yarn.server.resourcemanager.monitor.SchedulingMonitor.<init>(SchedulingMonitor.java:50)
-> at org.apache.hadoop.yarn.server.resourcemanager.monitor.SchedulingMonitor.serviceInit(SchedulingMonitor.java:61)
-> at org.apache.hadoop.yarn.server.resourcemanager.monitor.SchedulingMonitor.serviceInit(SchedulingMonitor.java:62)

	at org.apache.hadoop.yarn.server.resourcemanager.monitor.TestSchedulingMonitor.testRMStarts(TestSchedulingMonitor.java:58)

Issue Links

• is broken by: YARN-5543 ResourceManager SchedulingMonitor could potentially terminate the preemption checker thread