Hi, Quick update about the system tests.
Streams: If I make the change suggested by Matthias, all the Streams tests pass. So we need to update the release process to not run into this issue. Either we don't only merge the RC tags into the release branch after the vote, or we update the logic to not expect a SNAPSHOT version. Core: While trying to debug network_degrade_test.test_rate,name=rate-1000-latency-50, I noticed it is also failing in my environment with 4.0.0. Also the test was already flaky when introduced, see https://github.com/apache/kafka/pull/18247#issuecomment-2550372486, so I think we can consider not a blocker. Thanks, Mickael On Sat, Jul 26, 2025 at 12:24 PM Andrew Schofield <andrew_schofield_j...@outlook.com> wrote: > > Hi, > I downloaded and tested 4.1.0 RC1. > > I successfully checked the enablement and administration of the share > group and streams groups features. > > I also downloaded the documentation from the pending kafka-site PR. > I observe that it was necessary to manually change the #include > directives from 40 to 41 like this: > > <!--#include virtual="41/documentation.html" --> > > Once I'd done that, I could see the 4.1 documentation as expected. > I guess that's part of the actual release process. > > Also checked the javadoc and that looks OK to me. > > +1 (non-binding) > > Thanks, > Andrew > > ________________________________________ > From: Kuan-Po Tseng <brandb...@gmail.com> > Sent: 22 July 2025 16:43 > To: dev@kafka.apache.org <dev@kafka.apache.org> > Subject: Re: [VOTE] 4.1.0 RC1 > > Hi folks, > > I tested upgrading Kafka from both 3.7.2 and 3.8.1 to 4.1.0 and everything > seems good: > - Three-node KRaft cluster; verified produce/consume records worked > correctly using `kafka-producer-perf-test.sh` and > `kafka-console-consumer.sh` before and after each server upgrade. > - After upgrading one node to 4.1.0, saw repeated `The node does not > support UPDATE_RAFT_VOTER` logs — expected since server with older versions > don't support this API. > - Once all nodes were upgraded, the message disappeared. Everything worked > as expected. > > +1 (non-binding) > > Best, > Kuan-Po Tseng > > On Tue, Jul 22, 2025 at 11:03 PM Chia-Ping Tsai <chia7...@gmail.com> wrote: > > > hi > > If anyone wants to test 4.1.0-RC1 without the backport fix, please simply > > configure the jdk_version to use another image. For example: > > > > jdk_version="openjdk:17-bullseye" /bin/bash tests/docker/run_tests.sh > > > > Best, > > Chia-Ping > > > > Josep Prat <josep.p...@aiven.io.invalid> 於 2025年7月22日 週二 下午10:56寫道： > > > > > Hi Mickael, > > > I don't think we need a new RC just because of these files. Technically > > > speaking these files are part of the source tarball (which we release), > > but > > > as they are test files, I wouldn't consider them as a blocker that would > > > grant a new RC. > > > > > > Best, > > > > > > On Tue, Jul 22, 2025 at 4:51 PM Mickael Maison <mickael.mai...@gmail.com > > > > > > wrote: > > > > > > > Hi, > > > > > > > > Quick update regarding the system tests. My environment is back but > > > > now we're hitting https://issues.apache.org/jira/browse/KAFKA-19501. > > > > > > > > Debian buster which is used in the system tests is out of support and > > > > it's apt repository has now been archived. It worked till last week > > > > but now it's gone so we get an error when building the Docker image. > > > > We had only updated trunk to use bullseye. I've just backported the > > > > fix to 4.1: > > > > > > > > > https://github.com/apache/kafka/commit/d5a3acda897890379edb8819f15b144fcea564b0 > > > > > > > > The fix is only in tests/docker/Dockerfile and tests/docker/ducker-ak. > > > > My understanding is that these files are not part of any of the > > > > release artifacts. > > > > So I'm considering keeping the RC1 artifacts and running the system > > > > tests with the fix. > > > > > > > > Let me know if my understand is incorrect, or if you'd prefer building > > > > a new RC regardless. Obviously if we find issues with RC1, we'll do > > > > another RC anyway. > > > > > > > > Thanks, > > > > Mickael > > > > > > > > > > > > > > > > On Mon, Jul 21, 2025 at 5:04 PM Mickael Maison < > > mickael.mai...@gmail.com > > > > > > > > wrote: > > > > > > > > > > Hello Kafka users, developers and client-developers, > > > > > > > > > > This is the second candidate for release of Apache Kafka 4.1.0. > > > > > > > > > > The release brings many new features and improvements: > > > > > - Mechanism for plugin to register metrics > > > > > - Allow running multiple versions of connector plugins > > > > > - Queue are now in preview access > > > > > - New Streams rebalance protocol in early access > > > > > - Support for OAuth jwt-bearer grant type > > > > > - Improved metadata replication > > > > > > > > > > Release notes for the 4.1.0 release: > > > > > > > > > > > > > > https://dist.apache.org/repos/dist/dev/kafka/4.1.0-rc1/RELEASE_NOTES.html > > > > > > > > > > *** Please download, test and vote by Friday July 25. > > > > > > > > > > Kafka's KEYS file containing PGP keys we use to sign the release: > > > > > https://kafka.apache.org/KEYS > > > > > > > > > > * Release artifacts to be voted upon (source and binary): > > > > > https://dist.apache.org/repos/dist/dev/kafka/4.1.0-rc1/ > > > > > > > > > > * Docker release artifacts to be voted upon: > > > > > apache/kafka:4.1.0-rc1 > > > > > apache/kafka-native:4.1.0-rc1 > > > > > > > > > > * Maven artifacts to be voted upon: > > > > > > > https://repository.apache.org/content/groups/staging/org/apache/kafka/ > > > > > > > > > > * Javadoc: > > > > > https://dist.apache.org/repos/dist/dev/kafka/4.1.0-rc1/javadoc/ > > > > > > > > > > * Tag to be voted upon (off 4.1 branch) is the 4.1.0 tag: > > > > > https://github.com/apache/kafka/releases/tag/4.1.0-rc1 > > > > > > > > > > * Documentation: > > > > > https://kafka.apache.org/41/documentation.html > > > > > PR (https://github.com/apache/kafka-site/pull/702) is not merged yet > > > > > > > > > > * Protocol: > > > > > https://kafka.apache.org/41/protocol.html > > > > > PR (https://github.com/apache/kafka-site/pull/702) is not merged yet > > > > > > > > > > * Successful CI builds for the 4.1 branch: > > > > > Unit/integration tests: > > > > https://github.com/apache/kafka/actions/runs/16415760777 > > > > > System tests: The environment I use for running the system tests is > > > > > under maintenance. If someone can run the system tests, go ahead. > > > > > Otherwise I'll send an update once I'm able to run them. > > > > > > > > > > * Successful Docker Image Github Actions Pipeline for 4.1 branch: > > > > > Docker Build Test Pipeline (JVM): > > > > > https://github.com/apache/kafka/actions/runs/16415783067 > > > > > Docker Build Test Pipeline (Native): > > > > > https://github.com/apache/kafka/actions/runs/16415786103 > > > > > > > > > > Thanks, > > > > > Mickael > > > > > > > > > > > > > -- > > > [image: Aiven] <https://www.aiven.io/> > > > > > > *Josep Prat* > > > Sr. Engineering Director, Streaming Services, *Aiven* > > > josep.p...@aiven.io | +491715557497 > > > aiven.io <https://www.aiven.io/> | < > > https://www.facebook.com/aivencloud > > > > > > > <https://www.linkedin.com/company/aiven/> < > > > https://twitter.com/aiven_io> > > > *Aiven Deutschland GmbH* > > > Alexanderufer 3-7, 10117 Berlin > > > > > > Geschäftsführer: Oskari Saarenmaa, Hannu Valtonen, > > > > > > Kenneth Chen > > > Amtsgericht Charlottenburg, HRB 209739 B > > > > >
