Flaky-test: ManagedCursorPropertiesTest.testUpdateCursorPropertiesConcurrent

[lhotari]

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Example failure

https://github.com/apache/pulsar/actions/runs/23181205990/job/67355142183#step:11:2527

Exception stacktrace

[ERROR] org.apache.bookkeeper.mledger.impl.ManagedCursorPropertiesTest.testUpdateCursorPropertiesConcurrent -- Time elapsed: 0.018 s <<< FAILURE!
java.lang.AssertionError: expected [2] but found [null]
	at org.testng.Assert.fail(Assert.java:110)
	at org.testng.Assert.failNotEquals(Assert.java:1577)
	at org.testng.Assert.assertEqualsImpl(Assert.java:149)
	at org.testng.Assert.assertEquals(Assert.java:131)
	at org.testng.Assert.assertEquals(Assert.java:655)
	at org.testng.Assert.assertEquals(Assert.java:665)
	at org.apache.bookkeeper.mledger.impl.ManagedCursorPropertiesTest.testUpdateCursorPropertiesConcurrent(ManagedCursorPropertiesTest.java:292)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:569)
	at org.testng.internal.invokers.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:139)
	at org.testng.internal.invokers.InvokeMethodRunnable.runOne(InvokeMethodRunnable.java:47)
	at org.testng.internal.invokers.InvokeMethodRunnable.call(InvokeMethodRunnable.java:76)
	at org.testng.internal.invokers.InvokeMethodRunnable.call(InvokeMethodRunnable.java:11)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	at java.base/java.lang.Thread.run(Thread.java:840)

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• I'm willing to submit a PR!