ZooKeeperCheckpointIDCounterITCase.testConcurrentGetAndIncrement failed on azure

Feb 11 20:49:54 [ERROR] Tests run: 6, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 29.049 s <<< FAILURE! - in org.apache.flink.runtime.checkpoint.ZooKeeperCheckpointIDCounterITCase
Feb 11 20:49:54 [ERROR] org.apache.flink.runtime.checkpoint.ZooKeeperCheckpointIDCounterITCase.testConcurrentGetAndIncrement  Time elapsed: 27.5 s  <<< FAILURE!
Feb 11 20:49:54 java.lang.AssertionError: expected:<1008> but was:<1009>
Feb 11 20:49:54 	at org.junit.Assert.fail(Assert.java:89)
Feb 11 20:49:54 	at org.junit.Assert.failNotEquals(Assert.java:835)
Feb 11 20:49:54 	at org.junit.Assert.assertEquals(Assert.java:647)
Feb 11 20:49:54 	at org.junit.Assert.assertEquals(Assert.java:633)
Feb 11 20:49:54 	at org.apache.flink.runtime.checkpoint.CheckpointIDCounterTestBase.testConcurrentGetAndIncrement(CheckpointIDCounterTestBase.java:130)
Feb 11 20:49:54 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
Feb 11 20:49:54 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
Feb 11 20:49:54 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
Feb 11 20:49:54 	at java.lang.reflect.Method.invoke(Method.java:498)
Feb 11 20:49:54 	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
Feb 11 20:49:54 	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
Feb 11 20:49:54 	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
Feb 11 20:49:54 	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
Feb 11 20:49:54 	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
Feb 11 20:49:54 	at org.apache.flink.util.TestNameProvider$1.evaluate(TestNameProvider.java:45)
Feb 11 20:49:54 	at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:61)
Feb 11 20:49:54 	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
Feb 11 20:49:54 	at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
Feb 11 20:49:54 	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
Feb 11 20:49:54 	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
Feb 11 20:49:54 	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
Feb 11 20:49:54 	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
Feb 11 20:49:54 	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
Feb 11 20:49:54 	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
Feb 11 20:49:54 	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
Feb 11 20:49:54 	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
Feb 11 20:49:54 	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
Feb 11 20:49:54 	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
Feb 11 20:49:54 	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
Feb 11 20:49:54 	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
Feb 11 20:49:54 	at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
Feb 11 20:49:54 	at org.junit.vintage.engine.execution.RunnerExecutor.execute(RunnerExecutor.java:42)
Feb 11 20:49:54 	at org.junit.vintage.engine.VintageTestEngine.executeAllChildren(VintageTestEngine.java:80)
Feb 11 20:49:54 	at org.junit.vintage.engine.VintageTestEngine.execute(VintageTestEngine.java:72)
Feb 11 20:49:54 	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107)