[HBASE-27054] TestStochasticLoadBalancerRegionReplicaLargeCluster.testRegionReplicasOnLargeCluster is flaky

• Type: Test
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.5.0
• Fix Version/s: 2.5.0, 3.0.0-alpha-3, 2.4.13
• Component/s: test
• Hadoop Flags: Reviewed
• Assignee: David Manning
• Reporter: Andrew Kyle Purtell
• Created: 19/May/22 05:12
• Updated: 22/May/22 19:58
• Resolved: 21/May/22 16:47

Description

TestStochasticLoadBalancerRegionReplicaLargeCluster.testRegionReplicasOnLargeCluster . Looks like we can be off by one on either side of an expected value.

Any idea what is going on here dmanning?

org.apache.hadoop.hbase.master.balancer.TestStochasticLoadBalancerRegionReplicaLargeCluster.testRegionReplicasOnLargeCluster  Time elapsed: 77.779 s  <<< FAILURE!
java.lang.AssertionError: All servers should have load no less than 60.
server=srv1351292323,46522,-3543799643652531264 , load=59
	at org.junit.Assert.fail(Assert.java:89)
	at org.junit.Assert.assertTrue(Assert.java:42)
	at org.apache.hadoop.hbase.master.balancer.BalancerTestBase.assertClusterAsBalanced(BalancerTestBase.java:200)
	at org.apache.hadoop.hbase.master.balancer.BalancerTestBase.testWithCluster(BalancerTestBase.java:577)
	at org.apache.hadoop.hbase.master.balancer.BalancerTestBase.testWithCluster(BalancerTestBase.java:544)
	at org.apache.hadoop.hbase.master.balancer.TestStochasticLoadBalancerRegionReplicaLargeCluster.testRegionReplicasOnLargeCluster(TestStochasticLoadBalancerRegionReplicaLargeCluster.java:41)

org.apache.hadoop.hbase.master.balancer.TestStochasticLoadBalancerRegionReplicaLargeCluster.testRegionReplicasOnLargeCluster  Time elapsed: 77.781 s  <<< FAILURE!
java.lang.AssertionError: All servers should have load no more than 60. 
server=srv1402325691,7995,26308078476749652 , load=61
	at org.junit.Assert.fail(Assert.java:89)
	at org.junit.Assert.assertTrue(Assert.java:42)
	at org.apache.hadoop.hbase.master.balancer.BalancerTestBase.assertClusterAsBalanced(BalancerTestBase.java:198)
	at org.apache.hadoop.hbase.master.balancer.BalancerTestBase.testWithCluster(BalancerTestBase.java:577)
	at org.apache.hadoop.hbase.master.balancer.BalancerTestBase.testWithCluster(BalancerTestBase.java:544)
	at org.apache.hadoop.hbase.master.balancer.TestStochasticLoadBalancerRegionReplicaLargeCluster.testRegionReplicasOnLargeCluster(TestStochasticLoadBalancerRegionReplicaLargeCluster.java:41)

Issue Links

• links to: GitHub Pull Request #4454