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https://issues.apache.org/jira/browse/KAFKA-13787?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17515781#comment-17515781
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Nico Pommerening commented on KAFKA-13787:
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Hi [~mjsax] :
I'm experiencing the warnings on MacOs locally and Linux on Jenkins build
server.
I noticed the issue with deleting stuff under Windows, but I don't think this
one relates since when I'm actually deleting the files with the PR, it works as
expected.
I did wonder, why this issue appears though and tried to find the part of code
that was intended to delete these two files, but couldn't identify the clear
spot in StateDirectory logics.
Maybe you can also point me to the spot that should delete these two files, so
I can dig deeper on why it's not working in our setup?
> Failed to delete state store directory for it is not empty
> ----------------------------------------------------------
>
> Key: KAFKA-13787
> URL: https://issues.apache.org/jira/browse/KAFKA-13787
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 3.0.0
> Reporter: Nico Pommerening
> Priority: Major
> Attachments: bug-log.txt
>
>
> On Kafka Streams shutdown the Cleanup of state directories seems not to work,
> since the lock and metadata file seem not to be deleted.
> Relevant WARN logging:
> 2022-03-31 10:34:41,689 WARN [SpringApplicationShutdownHook]
> org.apache.kafka.streams.processor.internals.StateDirectory: stream-thread
> [SpringApplicationShutdownHook] Failed to delete state store directory of
> /kafka-streams-statestore/555b9965-95e3-4c92-b467-1d283428da5d/test-test-run-kpi
> for it is not empty
>
> Left over files in directory:
> * .lock
> * kafka-streams-process-metadata
>
> I'm not sure what the consequences of a unclean state cleanup are, but I
> would like to get rid of the Warning.
> I attached a bigger log extract and I've already patched the StateDirectory
> implementation which I'll try to contribute.
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