[jira] [Resolved] (KAFKA-15402) Performance regression on close consumer after upgrading to 3.5.0

["Kirk True (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-15402?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kirk True resolved KAFKA-15402.
-------------------------------
    Resolution: Not A Bug

I've created KAFKA-19884 to add integration tests to ensure the expected behavior.

> Performance regression on close consumer after upgrading to 3.5.0
> -----------------------------------------------------------------
>
>                 Key: KAFKA-15402
>                 URL: https://issues.apache.org/jira/browse/KAFKA-15402
>             Project: Kafka
>          Issue Type: Bug
>          Components: clients, consumer
>    Affects Versions: 3.5.0, 3.5.1, 3.6.0
>            Reporter: Benoit Delbosc
>            Assignee: Kirk True
>            Priority: Major
>             Fix For: 4.2.0
>
>         Attachments: image-2023-08-24-18-51-21-720.png, image-2023-08-24-18-51-57-435.png, image-2023-08-25-10-50-28-079.png
>
>
> Hi,
> After upgrading to Kafka client version 3.5.0, we have observed a significant increase in the duration of our Java unit tests. These unit tests heavily rely on the Kafka Admin, Producer, and Consumer API.
> When using Kafka server version 3.4.1, the duration of the unit tests increased from 8 seconds (with Kafka client 3.4.1) to 18 seconds (with Kafka client 3.5.0).
> Upgrading the Kafka server to 3.5.1 show similar results.
> I have come across the issue KAFKA-15178, which could be the culprit. I will attempt to test the proposed patch.
> In the meantime, if you have any ideas that could help identify and address the regression, please let me know.



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