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https://issues.apache.org/jira/browse/KAFKA-10869?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Justine Olshan resolved KAFKA-10869.
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Resolution: Fixed
> Gate topic IDs behind IBP 2.8
> -----------------------------
>
> Key: KAFKA-10869
> URL: https://issues.apache.org/jira/browse/KAFKA-10869
> Project: Kafka
> Issue Type: Sub-task
> Affects Versions: 2.8.0
> Reporter: Justine Olshan
> Assignee: Justine Olshan
> Priority: Blocker
>
> We want to do this so we don't lose topic IDs upon downgrades. If we
> downgrade and write to topic node in ZK, the topic ID will be lost. If the
> broker is upgraded again later, the topic IDs may not match.
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