Eric Payne created YARN-5973:
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Summary: TestCapacitySchedulerSurgicalPreemption sometimes fails
Key: YARN-5973
URL: https://issues.apache.org/jira/browse/YARN-5973
Project: Hadoop YARN
Issue Type: Bug
Components: capacity scheduler, scheduler preemption
Affects Versions: 2.8.0
Reporter: Eric Payne
Priority: Minor
The tests in {{TestCapacitySchedulerSurgicalPreemption}} appear to be racy.
They often pass, but the following errors sometimes occur:
{noformat}
testSimpleSurgicalPreemption(org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.TestCapacitySchedulerSurgicalPreemption)
Time elapsed: 14.671 sec <<< FAILURE!
java.lang.AssertionError: null
at org.junit.Assert.fail(Assert.java:86)
at org.junit.Assert.fail(Assert.java:95)
at
org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacitySchedulerPreemptionTestBase.waitNumberOfLiveContainersFromApp(CapacitySchedulerPreemptionTestBase.java:110)
at
org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.TestCapacitySchedulerSurgicalPreemption.testSimpleSurgicalPreemption(TestCapacitySchedulerSurgicalPreemption.java:143)
{noformat}
{noformat}
testSurgicalPreemptionWithAvailableResource(org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.TestCapacitySchedulerSurgicalPreemption)
Time elapsed: 9.503 sec <<< FAILURE!
java.lang.AssertionError: expected:<3> but was:<2>
at org.junit.Assert.fail(Assert.java:88)
at org.junit.Assert.failNotEquals(Assert.java:743)
at org.junit.Assert.assertEquals(Assert.java:118)
at org.junit.Assert.assertEquals(Assert.java:555)
at org.junit.Assert.assertEquals(Assert.java:542)
at
org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.TestCapacitySchedulerSurgicalPreemption.testSurgicalPreemptionWithAvailableResource(TestCapacitySchedulerSurgicalPreemption.java:220)
{noformat}
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