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From "Jon Meredith (Jira)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-16862) Fix flaky test DatabaseDescriptorRefTest
Date Wed, 18 Aug 2021 15:06:00 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-16862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17401128#comment-17401128
] 

Jon Meredith commented on CASSANDRA-16862:
------------------------------------------

It fails for me from inside IDEA

{noformat}
java.lang.AssertionError: thread started in clientInitialization 
Expected :6
Actual   :9

{noformat}

however this also passes for me

{code}
ant testsome -Dtest.name=org.apache.cassandra.config.DatabaseDescriptorRefTest -Dtest.method=testDatabaseDescriptorRef
{code}

I suspect the issue is test runner setup for the fancy IDE.  I wonder if it's possible to
detect running outside of the regular ant runner and just skip the test in that case, though
I'm interested if others can reproduce [~brandon.williams]'s failure.

> Fix flaky test DatabaseDescriptorRefTest
> ----------------------------------------
>
>                 Key: CASSANDRA-16862
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-16862
>             Project: Cassandra
>          Issue Type: Bug
>          Components: CI
>            Reporter: Ekaterina Dimitrova
>            Priority: Normal
>             Fix For: 3.11.x, 4.0.x, 4.x
>
>
> While working on another ticket I found out that DatabaseDescriptorRefTest is failing
consistently locally for me and one more community member on 3.11, 4.0 and trunk.
> {code:java}
>  java.lang.AssertionError: thread started in clientInitialization 
> Expected :5
> Actual   :8
> <Click to see difference>
> 	at org.junit.Assert.fail(Assert.java:88)
> 	at org.junit.Assert.failNotEquals(Assert.java:834)
> 	at org.junit.Assert.assertEquals(Assert.java:645)
> 	at org.apache.cassandra.config.DatabaseDescriptorRefTest.testDatabaseDescriptorRef(DatabaseDescriptorRefTest.java:285)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:498)
> 	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
> 	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
> 	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
> 	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
> 	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
> 	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
> 	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
> 	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
> 	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
> 	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
> 	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
> 	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
> 	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
> 	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
> 	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69)
> 	at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
> 	at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:221)
> 	at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54)
> {code}



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