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https://issues.apache.org/jira/browse/KAFKA-15839?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lianet Magrans resolved KAFKA-15839.
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Resolution: Duplicate
> Topic ID integration in consumer subscription state
> ---------------------------------------------------
>
> Key: KAFKA-15839
> URL: https://issues.apache.org/jira/browse/KAFKA-15839
> Project: Kafka
> Issue Type: Sub-task
> Components: clients, consumer
> Reporter: Lianet Magrans
> Assignee: Lianet Magrans
> Priority: Major
> Labels: kip-848-client-support, reconciliation
>
> With the new consumer group protocol, assignments received by the consumer
> contain topic IDs instead of topic names. Topic Ids are used in the
> reconciliation path, integrated using TopicIdPartition. When reconciling,
> topic names are resolved via a metadata update, but they are also kept in a
> local #MembershipManager cache. This local cache serves the purpose of
> keeping assigned topicId-names (that might have been deleted from metadata,
> ex. topic deleted).
> That's just an initial step towards spreading topic IDs internally in the
> consumer code. Next step to address with this task would be to include topic
> IDs in the subscription state, so that assigned topicId-names can be accessed
> from other components without the need of resolving names multiple times.
> Note that this task aims only at spreading topic IDs internally in the
> consumer, no changes to expose them at the API level.
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