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https://issues.apache.org/jira/browse/KAFKA-10193?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jeff Kim updated KAFKA-10193:
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Summary: Add preemption for controller events that have callbacks (was:
Add preemption for ControllerEvent that have callbacks)
> Add preemption for controller events that have callbacks
> --------------------------------------------------------
>
> Key: KAFKA-10193
> URL: https://issues.apache.org/jira/browse/KAFKA-10193
> Project: Kafka
> Issue Type: Bug
> Components: controller, metrics
> Reporter: Jeff Kim
> Assignee: Jeff Kim
> Priority: Minor
>
> There are classes that extends `ControllerEvent` and have callbacks but do
> not provide preemption:
> 1.
> [ApiPartitionReassignment|https://github.com/apache/kafka/blob/trunk/core/src/main/scala/kafka/controller/KafkaController.scala#L2073-L2074]
> 2.
> [ListPartitionReassignments|https://github.com/apache/kafka/blob/trunk/core/src/main/scala/kafka/controller/KafkaController.scala#L2098-L2099]
> Currently, the KafkaApi requests timeout for these events when the state of
> the controller changes. Instead we should preempt these events so that the
> requests are responded with a `NOT_CONTROLLER` error as we do for
> `ControlledShutdown` and `ReplicaLeaderElection` events. We can provide
> preemption
> [here|https://github.com/apache/kafka/blob/trunk/core/src/main/scala/kafka/controller/KafkaController.scala#L1862-L1870].
>
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