[KAFKA-15280] Implement client support for selecting KIP-848 server-side assignor

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.7.0
• Component/s: clients, consumer
• Labels: kip-848 kip-848-client-support kip-848-e2e kip-848-preview
• Assignee: Lucas Brutschy
• Reporter: Kirk True
• Created: 01/Aug/23 00:20
• Updated: 19/Feb/24 09:19
• Resolved: 06/Dec/23 18:04

Description

This includes:

• Validate the client’s configuration for server-side assignor selection defined in config `group.remote.assignor`
• Include the assignor taken from config in the ConsumerGroupHeartbeat request, in the `ServerAssignor` field 
• Properly handle UNSUPPORTED_ASSIGNOR errors that may be returned in the HB response if the server does not support the assignor defined by the consumer. 

This task is part of the work to implement support for the new KIP-848 consumer group protocol.

Issue Links

• is related to: KAFKA-15278 Implement client support for KIP-848 ConsumerGroupHeartbeat protocol RPC
• relates to: KAFKA-15282 Implement client support for KIP-848 client-side assignors
• links to: GitHub Pull Request #14878