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https://issues.apache.org/jira/browse/KAFKA-20547?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18099820#comment-18099820
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Nikita Shupletsov commented on KAFKA-20547:
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[~bloku]
I have a few questions:
were offsets 31316 and 31317 actually committed?
it looks like they may have been aborted due to the failure at the offset
39332.
and the picture also says at step3 that it picks up from the last committed
offset.
where were the duplicates? in the sink of service B?
> 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
> Assignee: Nikita Shupletsov
> 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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