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https://issues.apache.org/jira/browse/KAFKA-9039?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Guozhang Wang resolved KAFKA-9039.
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Fix Version/s: 2.5.0
Assignee: Lucas Bradstreet
Resolution: Fixed
> Optimize replica fetching CPU utilization with large number of partitions
> -------------------------------------------------------------------------
>
> Key: KAFKA-9039
> URL: https://issues.apache.org/jira/browse/KAFKA-9039
> Project: Kafka
> Issue Type: Improvement
> Components: core
> Reporter: Guozhang Wang
> Assignee: Lucas Bradstreet
> Priority: Major
> Fix For: 2.5.0
>
>
> Our current follower replica fetching logic has huge CPU cost with
> num.partitions to fetch from, and it scales non-linearly as well. There are a
> bunch of optimizations we can consider to try to reduce its cost and
> hopefully make it to be linear against the num.partitions.
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