Chia-Ping Tsai created KAFKA-19300:
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Summary: AsyncConsumer#unsubscribe always timeout due to
GroupAuthorizationException
Key: KAFKA-19300
URL: https://issues.apache.org/jira/browse/KAFKA-19300
Project: Kafka
Issue Type: Bug
Reporter: Chia-Ping Tsai
Assignee: Chia-Ping Tsai
it can be reproduced by
GroupAuthorizerIntegrationTest.testConsumeUnsubscribeWithoutGroupPermission.
The root cause is shown below.
1. AsyncConsumer#unsubscribe is executed
2. process(UnsubscribeEvent) changes the state to LEAVING
3. the state is changed to UNSUBSCRIBED in generating Heartbeat
4. the `LeaveInProgress` is skipped in transitionToFatal since the state is
UNSUBSCRIBED
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