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https://issues.apache.org/jira/browse/KAFKA-13406?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17466002#comment-17466002
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Juhyeon Kim commented on KAFKA-13406:
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[~showuon], thank you very much for your quick answer!
Then.. could you please clarify a bit when will be the release v3.1.0?
> Cooperative sticky assignor got stuck due to assignment validation failed
> -------------------------------------------------------------------------
>
> Key: KAFKA-13406
> URL: https://issues.apache.org/jira/browse/KAFKA-13406
> Project: Kafka
> Issue Type: Bug
> Components: clients
> Affects Versions: 3.0.0
> Reporter: Luke Chen
> Assignee: Luke Chen
> Priority: Major
> Fix For: 3.1.0, 3.0.1, 2.8.2
>
>
> We'll do validateCooperativeAssignment for cooperative assignor, where we
> validate if there are previously owned partitions directly transfer to other
> consumers without "revoke" step. However, the "ownedPartition" in
> subscription might contain out-of-dated data, which might cause the
> validation always failure.
> We should consider the short-term fix it by disabling
> validateCooperationAssignment for built-in cooperativeStickyAssignor because
> we've already consider the generation in the assignor, and discard the old
> generation ownedPartition if any.
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