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https://issues.apache.org/jira/browse/KAFKA-21080?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18128865#comment-18128865
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Matthias J. Sax commented on KAFKA-21080:
-----------------------------------------
Yes, you can only upgrade Kafka Streams.
In general, clients and broker are cross-version compatible. For details, you
should still checkout the release notes (sometimes there is special things to
consider).
> KafkaStreams pendingTasksToInit Task Handle Leak on Unclean Shutdown
> --------------------------------------------------------------------
>
> Key: KAFKA-21080
> URL: https://issues.apache.org/jira/browse/KAFKA-21080
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 3.9.0, 3.9.1, 3.9.2
> Reporter: guwensheng
> Priority: Critical
> Attachments:
> KAFKA-STREAMS-pendingTasksToInit-Handle-Leak-Bug-Report.md
>
>
> [^KAFKA-STREAMS-pendingTasksToInit-Handle-Leak-Bug-Report.md]
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