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https://issues.apache.org/jira/browse/KAFKA-7299?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16581848#comment-16581848
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ASF GitHub Bot commented on KAFKA-7299:
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huxihx opened a new pull request #5515: KAFKA-7299: Batch LeaderAndIsr requests
for AutoLeaderRebalance
URL: https://github.com/apache/kafka/pull/5515
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.
*More detailed description of your change,
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*Summary of testing strategy (including rationale)
for the feature or bug fix. Unit and/or integration
tests are expected for any behaviour change and
system tests should be considered for larger changes.*
### Committer Checklist (excluded from commit message)
- [ ] Verify design and implementation
- [ ] Verify test coverage and CI build status
- [ ] Verify documentation (including upgrade notes)
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> 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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