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https://issues.apache.org/jira/browse/CASSANDRA-17928?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17630094#comment-17630094
 ] 

Brandon Williams commented on CASSANDRA-17928:
----------------------------------------------

bq. So a simple condition that is signalled by the JVMKiller, that the test 
waits on for some predetermined period (perhaps 10s) to confirm the JVMKiller 
has been invoked seems sufficient.

About like 
[this?|https://github.com/driftx/cassandra/commit/6b448fa9ccef58d9116d39a48444afb37594fa20]
  Circle [passes 
30k|https://app.circleci.com/pipelines/github/driftx/cassandra/692/workflows/28d800ad-9f19-4853-a8d8-88c2c20dbb6e/jobs/7522]
 iterations.

> Test Failure: 
> org.apache.cassandra.db.commitlog.CommitLogInitWithExceptionTest.testCommitLogInitWithException-compression
> -------------------------------------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-17928
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-17928
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Test/unit
>            Reporter: Josh McKenzie
>            Assignee: Brandon Williams
>            Priority: Normal
>             Fix For: 4.1-rc
>
>
> [Link|https://ci-cassandra.apache.org/job/Cassandra-4.1/169/testReport/org.apache.cassandra.db.commitlog/CommitLogInitWithExceptionTest/testCommitLogInitWithException_compression/]
> Failed 1 times in the last 14 runs. Flakiness: 7%, Stability: 92%
> Stacktrace
> {code:java}
> java.lang.NullPointerException
>       at 
> org.apache.cassandra.db.commitlog.CommitLogInitWithExceptionTest.testCommitLogInitWithException(CommitLogInitWithExceptionTest.java:93)
>       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.util.concurrent.FutureTask.run(FutureTask.java:264)
>       at java.base/java.lang.Thread.run(Thread.java:829)
> {code}
> {code:java}
> Standard Output
> INFO  [main] 2022-09-25 11:43:16,512 Reflections.java:219 - Reflections took 
> 1221 ms to scan 8 urls, producing 1756 keys and 6922 values
> INFO  [main] 2022-09-25 11:43:17,480 Reflections.java:219 - Reflections took 
> 907 ms to scan 8 urls, producing 1756 keys and 6922 values
> INFO  [main] 2022-09-25 11:43:17,573 YamlConfigurationLoader.java:104 - 
> Configuration location: 
> file:////home/cassandra/cassandra/build/test/cassandra.compressed.yaml
> DEBUG [main] 2022-09-25 11:43:17,574 YamlConfigurationLoader
> ...[truncated 35568 chars]...
> .apache.cassandra.db.commitlog.CommitLogInitWithExceptionTest$MockCommitLogSegmentMgr.createSegment(CommitLogInitWithExceptionTest.java:106)
>       at 
> org.apache.cassandra.db.commitlog.AbstractCommitLogSegmentManager$AllocatorRunnable.run(AbstractCommitLogSegmentManager.java:155)
>       at 
> org.apache.cassandra.concurrent.InfiniteLoopExecutor.loop(InfiniteLoopExecutor.java:121)
>       at 
> io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
>       at java.lang.Thread.run(Thread.java:748)
> {code}



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