Sean Quah created KAFKA-21176:
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Summary: GroupMetadataManager.groupsByTopics not cleaned up on
consumer group downgrade
Key: KAFKA-21176
URL: https://issues.apache.org/jira/browse/KAFKA-21176
Project: Kafka
Issue Type: Bug
Components: group-coordinator
Affects Versions: 4.0.0
Reporter: Sean Quah
Assignee: Gavin Wang
In the consumer to classic group downgrade path, we call `removeGroup` directly
since the path is non-replaying. This neglects to clear out the group from
`GroupMetadataManager.groupsByTopics`.
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