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Posted to jira@kafka.apache.org by "M Paget (Jira)" <ji...@apache.org> on 2026/02/22 03:43:00 UTC

[jira] [Comment Edited] (KAFKA-19652) Consumer throughput drops by 10 times with Kafka v3.9.0 in ZK mode

    [ https://issues.apache.org/jira/browse/KAFKA-19652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18060016#comment-18060016 ] 

M Paget edited comment on KAFKA-19652 at 2/22/26 3:42 AM:
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Following ...


was (Author: marcuspaget):
+1

> 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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