[YARN-6215] FairScheduler preemption and update should not run concurrently

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.9.0, 3.0.0-alpha4
• Component/s: fairscheduler, test
• Hadoop Flags: Reviewed
• Assignee: Tao Jie
• Reporter: Sunil G
• Created: 22/Feb/17 10:58
• Updated: 21/Apr/17 21:56
• Resolved: 27/Feb/17 04:31

Description

Error Message
Incorrect number of containers on the greedy app expected:<4> but was:<8>
Failed test case link
Stacktrace

java.lang.AssertionError: Incorrect number of containers on the greedy app expected:<4> but was:<8>
	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.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.TestFairSchedulerPreemption.verifyPreemption(TestFairSchedulerPreemption.java:282)
	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.TestFairSchedulerPreemption.testPreemptionBetweenNonSiblingQueues(TestFairSchedulerPreemption.java:323)

Issue Links

• is related to: YARN-6210 FS: Node reservations can interfere with preemption