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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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huxihx reassigned KAFKA-7299:
-----------------------------

    Assignee: huxihx

> 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
>
> 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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