[KAFKA-15643] Improve unloading logging

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.7.0
• Assignee: Ritika Reddy
• Reporter: David Jacot
• Reviewer: David Jacot
• Created: 19/Oct/23 05:41
• Updated: 31/Oct/23 10:09
• Resolved: 30/Oct/23 20:02

Description

When a new leader is elected for a __consumer_offset partition, the followers are notified to unload the state. However, only the former leader is aware of it. The remaining follower prints out the following error:
ERROR [GroupCoordinator id=1] Execution of UnloadCoordinator(tp=__consumer_offsets-1, epoch=0) failed due to This is not the correct coordinator.. (org.apache.kafka.coordinator.group.runtime.CoordinatorRuntime)
The error is actually correct but we should improve the logging to not print anything when in the remaining follower case.

Issue Links

• links to: GitHub Pull Request #14657