[Bug]: Changing log.segment.bytes lead to preventing retention and increasing pvc usage and disk is getting filled

[nsettipa]

Bug Description

String 0.39 and kafka version 3.5.1. Trying to simulate log.segment.bytes, retention value set. Created a topic without retention. set the retention at broker level. Ran the traffic towards kafka broker level. modified the log.segment.bytes. monitored the disk usage. the pvc getting filled and lead to crashloopbackoff. Is there any configuration change that helps preventing disk usage high. Is retention value should be increased.

Steps to reproduce

1. Deploy Strimzi 0.39 with operator activated.
2. Create a topic without retention. set the retention at broker level.
3. Run the traffic towards the topic
4. modify the log.segment.bytes.
5. monitor the disk usage. the pvc getting filled and lead to crashloopbackoff

Expected behavior

Disk usage should not increase. That is the expectation.

Strimzi version

0.39

Kubernetes version

1.32

Installation method

No response

Infrastructure

No response

Configuration files and logs

No response

Additional context

No response

[scholzj]

What exactly do you think is a Strimzi bug on this?

[ppatierno]

I can't see it as a Strimzi bug and should be asked to the Apache Kafka community imho.

[nsettipa]

Can you share kafka community group details.

…

On Tue, 9 Sept, 2025, 13:00 Paolo Patierno, ***@***.***> wrote: I can't see it as a Strimzi bug and should be asked to the Apache Kafka community imho. — Reply to this email directly, view it on GitHub <#11846 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AC7EJS2QXL57GS6UMCZ4KS33RZ62VAVCNFSM6AAAAACF72L33SVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTIMZUHAZDQNQ> . You are receiving this because you authored the thread.Message ID: <strimzi/strimzi-kafka-operator/repo-discussions/11846/comments/14348286@ github.com>

[im-konge]

I think you can check where is the Kafka community and how you can reach them. It's on their website I'm sure :)