Jun Rao created KAFKA-7299:
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Summary: batch LeaderAndIsr requests during auto preferred leader
election
Key: KAFKA-7299
URL: https://issues.apache.org/jira/browse/KAFKA-7299
Project: Kafka
Issue Type: Sub-task
Components: core
Affects Versions: 2.0.0
Reporter: Jun Rao
Currently, in KafkaController.checkAndTriggerAutoLeaderRebalance(), we call
onPreferredReplicaElection() one partition at a time. This means that the
controller will be sending LeaderAndIsrRequest one partition at a time. It
would be more efficient to call onPreferredReplicaElection() for a batch of
partitions to reduce the number of LeaderAndIsrRequests.
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