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https://issues.apache.org/jira/browse/KAFKA-10585?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17210251#comment-17210251
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Dongjin Lee commented on KAFKA-10585:
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I inspected this issue a little bit. You mean, all
`\{state.dir}/\{application-id}/*` are deleted but
`\{state.dir}/\{application-id}` itself does not deleted when cleanup,
occupying filesystem resources.
Do I understand correctly?
> Kafka Streams should clean up the state store directory from cleanup
> --------------------------------------------------------------------
>
> Key: KAFKA-10585
> URL: https://issues.apache.org/jira/browse/KAFKA-10585
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Reporter: Rohan Desai
> Priority: Major
>
> Currently, `KafkaStreams.cleanup` cleans up all the task-level directories
> and the global directory. However it doesn't clean up the enclosing state
> store directory, though streams does create this directory when it
> initializes the state for the streams app. Feels like it should remove this
> directory when it cleans up.
> We notice this in ksql quite often, since every new query is a new streams
> app. Over time, we see lots of state store directories left around for old
> queries.
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