[jira] [Updated] (KAFKA-15839) Topic ID integration in consumer subscription state

["Colin McCabe (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-15839?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Colin McCabe updated KAFKA-15839:
---------------------------------
    Fix Version/s: 4.0.0
                       (was: 3.9.0)

> 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
>             Fix For: 4.0.0
>
>
> 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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