[jira] [Assigned] (KAFKA-15284) Implement ConsumerGroupProtocolVersionResolver to determine consumer group protocol

["Kirk True (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-15284?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kirk True reassigned KAFKA-15284:
---------------------------------

    Assignee:     (was: Kirk True)

> Implement ConsumerGroupProtocolVersionResolver to determine consumer group protocol
> -----------------------------------------------------------------------------------
>
>                 Key: KAFKA-15284
>                 URL: https://issues.apache.org/jira/browse/KAFKA-15284
>             Project: Kafka
>          Issue Type: New Feature
>          Components: clients, consumer
>            Reporter: Kirk True
>            Priority: Major
>              Labels: kip-848-client-support
>             Fix For: 4.0.0
>
>
> At client initialization, we need to determine which of the {{ConsumerDelegate}} implementations to use:
>  # {{LegacyKafkaConsumerDelegate}}
>  # {{AsyncKafkaConsumerDelegate}}
> There are conditions defined by KIP-848 that determine client eligibility to use the new protocol. This will be modeled by the—deep breath—{{{}ConsumerGroupProtocolVersionResolver{}}}.
> Known tasks:
>  * Determine at what point in the {{Consumer}} initialization the network communication should happen
>  * Determine what RPCs to invoke in order to determine eligibility (API versions, IBP version, etc.)
>  * Implement the network client lifecycle (startup, communication, shutdown, etc.)
>  * Determine the fallback path in case the client is not eligible to use the protocol



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