[KAFKA-9033] Change default client-id in consumer / producer to be more meaningful

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.4.0
• Component/s: clients
• Assignee: Jason Gustafson
• Reporter: Guozhang Wang
• Created: 12/Oct/19 00:10
• Updated: 15/Oct/19 21:53
• Resolved: 15/Oct/19 21:53

Description

Right now in consumer / producer, the default client-id is set as consumer-[suffix] and producer-[suffix] which is not very meaningful; on the other hand, since client-ids will be shown on the broker request logs it can be very useful for debugging purposes.

So I'd propose we change their default values as the following:

1. For producer:

producer-[transactionalId]-[suffix] where transactionalId would be set to none if null.

2. For consumer:

consumer-[groupId]-[instanceId or suffix] where groupId would be set to none if null, and suffix would only be used if instanceId is set to null.

Issue Links

• links to: GitHub Pull Request #7514