[jira] [Created] (KAFKA-4410) KafkaController sends double the expected number of StopReplicaRequests during controlled shutdown

["Onur Karaman (JIRA)" <ji...@apache.org>]

Onur Karaman created KAFKA-4410:
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             Summary: KafkaController sends double the expected number of StopReplicaRequests during controlled shutdown
                 Key: KAFKA-4410
                 URL: https://issues.apache.org/jira/browse/KAFKA-4410
             Project: Kafka
          Issue Type: Bug
            Reporter: Onur Karaman
            Assignee: Onur Karaman


We expect KafkaController to send one StopReplicaRequest for each follower replica on the broker undergoing controlled shutdown. Examining KafkaController.shutdownBroker, we see that this is not the case:
1. KafkaController.shutdownBroker itself sends a StopReplicaRequest for each follower replica
2. KafkaController.shutdownBroker transitions every follower replica to OfflineReplica in its call to replicaStateMachine.handleStateChanges, which also sends a StopReplicaRequest.



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