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https://issues.apache.org/jira/browse/KAFKA-20547?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Uladzislau Blok updated KAFKA-20547:
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Attachment: (was: Untitled-2026-04-28-1158.excalidraw.png)
> Streams produces duplicates with EOS_v2
> ---------------------------------------
>
> Key: KAFKA-20547
> URL: https://issues.apache.org/jira/browse/KAFKA-20547
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 3.9.1
> Reporter: Uladzislau Blok
> Priority: Major
> Attachments: Untitled-2026-04-28-1158.excalidraw-1.png
>
>
> Hello All,
> I saw an issue when Kafka Streams processed same input twice resulting in
> duplicated output, what breaks EOS
> See attached diagram describing what went wrong
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