apache / apache/pulsar

Flaky-test: LockManagerTest.updateValueWhenVersionIsOutOfSync

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lifecycle/stale Stale type/flaky-tests
Dominant language
Java
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Description

LockManagerTest is flaky. The updateValueWhenVersionIsOutOfSync test method fails sporadically.

https://github.com/apache/pulsar/runs/4977106658

```
Error: updateValueWhenVersionIsOutOfSync(org.apache.pulsar.metadata.LockManagerTest) Time elapsed: 0.069 s <<< FAILURE!
java.lang.AssertionError: expected [value-2] but found [lock-1]
at org.testng.Assert.fail(Assert.java:99)
at org.testng.Assert.failNotEquals(Assert.java:1037)
at org.testng.Assert.assertEqualsImpl(Assert.java:140)
at org.testng.Assert.assertEquals(Assert.java:122)
at org.testng.Assert.assertEquals(Assert.java:629)
at org.testng.Assert.assertEquals(Assert.java:639)
at org.apache.pulsar.metadata.LockManagerTest.updateValueWhenVersionIsOutOfSync(LockManagerTest.java:180)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:132)
at org.testng.internal.InvokeMethodRunnable.runOne(InvokeMethodRunnable.java:45)
at org.testng.internal.InvokeMethodRunnable.call(InvokeMethodRunnable.java:73)
at org.testng.internal.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:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:829)
```

Contributor guide

Open the contributing guide

Research direction

Start with the org.apache.pulsar.metadata.LockManagerTest.updateValueWhenVersionIsOutOfSync method, especially the assertion at line 180, and reproduce the failure using the referenced test run. Trace the test's LockManager interactions and identify why the expected value is intermittently replaced by lock-1. Done means the test passes reliably without weakening its assertions.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
testing
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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