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https://issues.apache.org/jira/browse/KAFKA-15105?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17737696#comment-17737696
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Josep Prat commented on KAFKA-15105:
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Hi [~riedelmax], feel free to assign this issue to yourself :)
{quote}I'm still trying to understand how the build infrastructure works. Can
someone give me a hint, how to reproduce the behavior?
{quote}
In this rely part of the problem, many times these issues are not easily
reproducible on your machine. Usually they occur on CI.
The test itself is under the core module, so one way to try to reproduce it
would be running `./gradlew core:test` or `./gradlew core:test --tests
integration.kafka.server.FetchFromFollowerIntegrationTest.testFetchFromLeaderWhilePreferredReadReplicaIsUnavailable`repeatedly
until failure. IntelliJ (if you have it and use it) has a similar feature
where one can run a test until failure.
Is this answering your question? Or you wanted to know some other specific
details?
> Flaky test
> FetchFromFollowerIntegrationTest.testFetchFromLeaderWhilePreferredReadReplicaIsUnavailable
> -----------------------------------------------------------------------------------------------------
>
> Key: KAFKA-15105
> URL: https://issues.apache.org/jira/browse/KAFKA-15105
> Project: Kafka
> Issue Type: Bug
> Components: core
> Affects Versions: 3.5.0
> Reporter: Josep Prat
> Priority: Major
> Labels: flaky-test
>
> Test
> integration.kafka.server.FetchFromFollowerIntegrationTest.testFetchFromLeaderWhilePreferredReadReplicaIsUnavailable()
> became flaky. An example can be found here:
> [https://ci-builds.apache.org/job/Kafka/job/kafka-pr/job/PR-13865/2/testReport/junit/integration.kafka.server/FetchFromFollowerIntegrationTest/Build___JDK_11_and_Scala_2_13___testFetchFromLeaderWhilePreferredReadReplicaIsUnavailable__/]
> The error might be caused because of a previous kafka cluster used for
> another test wasn't cleaned up properly before this one run.
>
> h3. Error Message
> {code:java}
> org.apache.kafka.common.errors.TopicExistsException: Topic
> '__consumer_offsets' already exists.{code}
> h3. Stacktrace
> {code:java}
> org.apache.kafka.common.errors.TopicExistsException: Topic
> '__consumer_offsets' already exists. {code}
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