Flaky-test: NegativeAcksTest.testNegativeAcksWithBackoff

[lhotari]

Search before asking

• I searched in the issues and found nothing similar.

Example failures

• 2025-01-21T06:22:11.8350781Z

Exception stacktrace

java.lang.AssertionError: expected [null] but found [org.apache.pulsar.client.impl.MessageImpl@6c98609e]
	at org.testng.Assert.fail(Assert.java:110)
	at org.testng.Assert.failNotSame(Assert.java:1573)
	at org.testng.Assert.assertNull(Assert.java:1506)
	at org.testng.Assert.assertNull(Assert.java:1494)
	at org.apache.pulsar.client.impl.NegativeAcksTest.testNegativeAcksWithBackoff(NegativeAcksTest.java:285)
	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)

Are you willing to submit a PR?

• I'm willing to submit a PR!

[lhotari]

@thetumbled Do you have a chance to check this flaky test? This flaky test seems to have appeared after PIP-393 changes, #23600 and #23804.

[lhotari]

This is currently the flakiest test that hasn't been fixed, according to this report: https://github.com/lhotari/pulsar-flakes/tree/master/2025-01-23-14d-master#summary

[thetumbled]

@thetumbled Do you have a chance to check this flaky test? This flaky test seems to have appeared after PIP-393 changes, #23600 and #23804.

I will check this flaky test later.