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https://issues.apache.org/jira/browse/KAFKA-7299?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jun Rao resolved KAFKA-7299.
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Resolution: Fixed
Fix Version/s: 2.1.0
Merged the PR to trunk.
> 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
> Assignee: huxihx
> Priority: Major
> Fix For: 2.1.0
>
>
> 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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