TestRMAdminCLI#testTransitionToActive and testHelp fail on trunk

testTransitionToActive(org.apache.hadoop.yarn.client.TestRMAdminCLI)  Time elapsed: 0.105 sec  <<< ERROR!
java.lang.UnsupportedOperationException: null
	at java.util.AbstractList.remove(AbstractList.java:144)
	at java.util.AbstractList$Itr.remove(AbstractList.java:360)
	at java.util.AbstractCollection.remove(AbstractCollection.java:252)
	at org.apache.hadoop.ha.HAAdmin.isOtherTargetNodeActive(HAAdmin.java:173)
	at org.apache.hadoop.ha.HAAdmin.transitionToActive(HAAdmin.java:144)
	at org.apache.hadoop.ha.HAAdmin.runCmd(HAAdmin.java:447)
	at org.apache.hadoop.ha.HAAdmin.run(HAAdmin.java:380)
	at org.apache.hadoop.yarn.client.cli.RMAdminCLI.run(RMAdminCLI.java:318)
	at org.apache.hadoop.yarn.client.TestRMAdminCLI.testTransitionToActive(TestRMAdminCLI.java:180)

testHelp(org.apache.hadoop.yarn.client.TestRMAdminCLI)  Time elapsed: 0.091 sec  <<< FAILURE!
java.lang.AssertionError: null
	at org.junit.Assert.fail(Assert.java:86)
	at org.junit.Assert.assertTrue(Assert.java:41)
	at org.junit.Assert.assertTrue(Assert.java:52)
	at org.apache.hadoop.yarn.client.TestRMAdminCLI.testError(TestRMAdminCLI.java:366)
	at org.apache.hadoop.yarn.client.TestRMAdminCLI.testHelp(TestRMAdminCLI.java:307)


Results :