[YARN-7341] TestRouterWebServiceUtil#testMergeMetrics is flakey

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0-beta1
• Fix Version/s: 2.9.0, 3.0.0, 3.1.0
• Component/s: federation
• Hadoop Flags: Reviewed
• Assignee: Robert Kanter
• Reporter: Robert Kanter
• Created: 16/Oct/17 23:40
• Updated: 17/Oct/17 20:23
• Resolved: 17/Oct/17 17:28

Description

TestRouterWebServiceUtil#testMergeMetrics is flakey. It sometimes fails with something like:

Running org.apache.hadoop.yarn.server.router.webapp.TestRouterWebServiceUtil
Tests run: 8, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 0.252 sec <<< FAILURE! - in org.apache.hadoop.yarn.server.router.webapp.TestRouterWebServiceUtil
testMergeMetrics(org.apache.hadoop.yarn.server.router.webapp.TestRouterWebServiceUtil)  Time elapsed: 0.005 sec  <<< FAILURE!
java.lang.AssertionError: expected:<1092> but was:<584>
	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.router.webapp.TestRouterWebServiceUtil.testMergeMetrics(TestRouterWebServiceUtil.java:473)

Issue Links

• is broken by: YARN-7095 Federation: routing getNode/getNodes/getMetrics REST invocations transparently to multiple RMs