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Posted to dev@kafka.apache.org by "David Jacot (Jira)" <ji...@apache.org> on 2025/11/15 11:00:00 UTC

[jira] [Resolved] (KAFKA-19449) Unexpected UNREVOKED_PARTITIONS to UNRELEASED_PARTITIONS transition in consumer member reconciliation

     [ https://issues.apache.org/jira/browse/KAFKA-19449?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Jacot resolved KAFKA-19449.
---------------------------------
    Fix Version/s: 4.2.0
                   4.0.2
                   4.1.2
       Resolution: Fixed

> Unexpected UNREVOKED_PARTITIONS to UNRELEASED_PARTITIONS transition in consumer member reconciliation
> -----------------------------------------------------------------------------------------------------
>
>                 Key: KAFKA-19449
>                 URL: https://issues.apache.org/jira/browse/KAFKA-19449
>             Project: Kafka
>          Issue Type: Bug
>          Components: group-coordinator
>            Reporter: Sean Quah
>            Assignee: Sean Quah
>            Priority: Minor
>             Fix For: 4.2.0, 4.0.2, 4.1.2
>
>
> We transition to `UNRELEASED_PARTITIONS` when advancing to a new target assignment and partitions in the assignment are "owned" by another member.
> Partitions are considered "owned" by another member if they are in a member's assignment or partitions pending revocation. Ownership is only updated after reconciliation has finished.
> When the latest target assignment includes partitions from the partitions pending revocation list, we mistakenly think the partitions are owned by another member and can transition from `UNREVOKED_PARTITIONS` to `UNRELEASED_PARTITIONS` instead.



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