[KAFKA-16819] CoordinatorRequestManager seems to return 0ms during the coordinator discovery

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 3.9.0
• Component/s: clients, consumer
• Labels: consumer-threading-refactor
• Assignee: Philip Nee
• Reporter: Philip Nee
• Created: 22/May/24 18:08
• Updated: 12/Aug/24 16:46
• Resolved: 12/Aug/24 16:46

Description

In KAFKA-15250 we discovered the ConsumerNetworkThread is looping without much backoff.  The in-flight check PR fixed a lot of it; however, during the coordinator discovery phase, CoordinatorRequestManager would keep on returning 0 before the coordinator node was found.

 

The impact is minor but we should be expecting the coordinator manager to backoff until the exp backoff expired (so it should return around 100ms).