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https://issues.apache.org/jira/browse/KAFKA-19652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18055908#comment-18055908
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Bertalan Kondrat commented on KAFKA-19652:
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Hi [~kirktrue] ,[~ancjainil]
We were able to reproduce this issue in our own environment too.
Throughput drops from: 147.5842 MB/sec (Kafka 3.4) to 58.6748 MB/sec (Kafka
3.9) with `min.insync.replicas=2`
Were you able to work on this problem and find something?
Do you think new releases, like 4.0 and above, are affected too?
> Consumer throughput drops by 10 times with Kafka v3.9.0 in ZK mode
> ------------------------------------------------------------------
>
> Key: KAFKA-19652
> URL: https://issues.apache.org/jira/browse/KAFKA-19652
> Project: Kafka
> Issue Type: Bug
> Components: clients, consumer
> Affects Versions: 3.9.0
> Reporter: Sharad Garg
> Priority: Blocker
>
> Kafka consumer throughput in best-case drops by ~10 times after upgrading to
> kafka v3.9.0 from v3.5.1. Note that this is in ZK mode and KRAFT migration is
> not done yet.
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