[KAFKA-15321] Document consumer group member state machine

• Type: Task
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Fix Version/s: 4.0.0
• Component/s: clients, consumer, documentation
• Labels: kip-848-client-support reconciliation
• Assignee: Colin McCabe
• Reporter: Kirk True
• Created: 09/Aug/23 00:23
• Updated: 09/Aug/24 22:42

Description

We need to first document the new consumer group member state machine. What are the different states and what are the transitions?

See pnee's notes: https://cwiki.apache.org/confluence/display/KAFKA/Consumer+threading+refactor+design

Don’t forget to include diagrams for clarity!

This should be documented on the AK wiki.