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https://issues.apache.org/jira/browse/KAFKA-14042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17562076#comment-17562076
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Mickael Maison commented on KAFKA-14042:
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Is this a DUP of https://issues.apache.org/jira/browse/KAFKA-12635?
> OffsetSyncStore.translateDownstream() should be compatible with the scenario
> where no msgs are sync-ing while consumer group offsets are sync-ing
> -------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: KAFKA-14042
> URL: https://issues.apache.org/jira/browse/KAFKA-14042
> Project: Kafka
> Issue Type: Bug
> Reporter: Justinwins
> Assignee: Justinwins
> Priority: Major
> Attachments: image-2022-07-04-11-22-44-146.png
>
>
> Let's say, no msgs in source topic parititon (A-0) because of short ttl ,but
> there are still
> offsets committed by consumers subscribing A-0. At this time ,we set up mm2,
> and it begins to
> sync A-0 and the according consumer group ,too. Then we will find it hard to
> understand that:
> even though there are no msgs beging synced for real , consumer group offsets
> are still beging
> synced to target cluster ,which would producing lag <0 in target cluster for
> A-0.
>
>
>
>
> !image-2022-07-04-11-22-44-146.png!
>
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