Hi, Paolo, There is a PR https://github.com/apache/kafka/pull/20268 for the doc change for ELR.
Hi, Christo, Group rebalance is designed so that each partition is only consumed by a single consumer instance at a time. Share consumer by design allows a single partition to be consumed by more than one consumer at any time. So, it doesn't need group.coordinator.rebalance.protocols. Thanks, Jun On Wed, Jul 30, 2025 at 6:14 AM Christo Lolov <christolo...@gmail.com> wrote: > Heya! > > I tested creating a cluster using the binary tgz. Furthermore, I went > through the enabling, producing, consuming, and disabling of queues. > Lastly, I carried out the same steps on both Docker images. > > I went through the JavaDocs and clicked on links to confirm they work. > > I chose artifacts at random and confirmed that they are signed. > > I went through the release notes, and the OAuth jwt-bearer KIP is > classified as an improvement and not as a new feature. I am uncertain > whether we have a standardised way of differentiating between them and > whether it is up to the KIP-implementer to correctly classify the JIRA > ticket. Either way, I don’t think this is a blocker. > > I cross-checked the upgrade.html with what is currently on the > kafka.apache.org website. It appears that in > > https://github.com/apache/kafka-site/blob/abd4e2ac9d4da0c7e3c54203925725c9e2da653d/41/upgrade.html > (part of https://github.com/apache/kafka-site/pull/702/files) we have > upgrade notes for 4.1.0, 4.0.0 and 3.9.0 while on the website we have > upgrade notes for 4.0.0 and 3.9.0. I suspect we mention only the latest > version and give a link to the previous one. In the latest PR, however, I > believe we have 3 sections instead of just 2. > > It is a bit difficult to see whether the new addition to the default of > group.coordinator.rebalance.protocols i.e. streams, is part of the > documentation. > > Along the same lines, is the share value needed for the same configuration? > There is no mention of it in > > https://cwiki.apache.org/confluence/display/KAFKA/Queues+for+Kafka+%28KIP-932%29+-+Preview+Release+Notes > and I am able to produce and consume using the CLI tools without it? > > I don't feel that my documentation-related queries are a blocker. As > such +1 (binding) for this release candidate from me :) > > Best, > Christo > > > > > On Wed, 30 Jul 2025 at 08:08, Paolo Patierno <paolo.patie...@gmail.com> > wrote: > > > Of course, here my +1 (non binding) for the release :-) > > > > On Wed, 30 Jul 2025 at 08:15, Paolo Patierno <paolo.patie...@gmail.com> > > wrote: > > > > > HI, > > > within the Strimzi project we ran all the regression tests and > everything > > > seems to be fine. > > > We had to deal with a behavioural change in Kafka 4.1. It seems that > now > > > ELR feature is enabled by default (while it was disabled in 4.0) and > when > > > it's enabled, you cannot change the min ISR broker configuration (but, > if > > > enabled, it was the same with 4.0). > > > > > > Thanks, > > > Paolo Patierno > > > > > > On Mon, 28 Jul 2025 at 20:48, Mickael Maison <mickael.mai...@gmail.com > > > > > wrote: > > > > > >> 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 > > >> > > > > > >> > > > > >> > > > > > > > > > -- > > > Paolo Patierno > > > > > > *Senior Principal Software Engineer @ IBM**CNCF Ambassador* > > > > > > Twitter : @ppatierno <http://twitter.com/ppatierno> > > > Linkedin : paolopatierno <http://it.linkedin.com/in/paolopatierno> > > > GitHub : ppatierno <https://github.com/ppatierno> > > > > > > > > > -- > > Paolo Patierno > > > > *Senior Principal Software Engineer @ IBM**CNCF Ambassador* > > > > Twitter : @ppatierno <http://twitter.com/ppatierno> > > Linkedin : paolopatierno <http://it.linkedin.com/in/paolopatierno> > > GitHub : ppatierno <https://github.com/ppatierno> > > >
