KAFKA-7976; Update config before notifying controller of unclean leader update #6426
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When unclean leader election is enabled dynamically on brokers, we notify controller of the update before updating KafkaConfig. When processing this event, controller's decision to elect unclean leaders is based on the current KafkaConfig, so there is a small timing window when the controller may not elect unclean leader because
KafkaConfig
of the server was not yet updated. The PR fixes this timing window by using the existingBrokerReconfigurable
interface used by other classes which rely on the current value ofKafkaConfig
.Committer Checklist (excluded from commit message)