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Posted to dev@kafka.apache.org by Viktor Somogyi-Vass <vi...@gmail.com> on 2026/03/04 16:54:36 UTC
[VOTE] 4.0.2 RC3
Hello Kafka users, developers and client-developers,
This is the third candidate for release of Apache Kafka 4.0.2.
This is a patch release and therefore it contains important bug fixes.
Release notes for the 4.0.2 release:
https://dist.apache.org/repos/dist/dev/kafka/4.0.2-rc3/RELEASE_NOTES.html
*** Please download, test and vote by Wednesday, March 11.
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/4.0.2-rc3/
* Docker release artifacts to be voted upon:
apache/kafka:4.0.2-rc3
apache/kafka-native:4.0.2-rc3
https://dist.apache.org/repos/dist/dev/kafka/4.0.2-rc3/kafka_2.13-4.0.2.tgz
* 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/4.0.2-rc3/javadoc/
* Tag to be voted upon (off 4.0 branch) is the 4.0.2 tag:
https://github.com/apache/kafka/releases/tag/4.0.2-rc3
* Documentation: https://github.com/apache/kafka-site/pull/807
* Successful CI builds for the 4.0 branch:
Unit/integration tests:
https://github.com/apache/kafka/actions/runs/22615674106
System tests: test runs are available at
https://drive.google.com/drive/folders/1K8nfXNgnSOwc61JhRQylICFivn7ZSMKq?usp=sharing
There were some failures of which all but one are flaky (successful on
rerun) and one is a known test issue:
tests/kafkatest/tests/core/network_degrade_test.py::NetworkDegradeTest.test_rate@
{"task_name":"rate-1000-latency-50","device_name":"eth0","latency_ms":50,"rate_limit_kbit":1000000,"metadata_quorum":"COMBINED_KRAFT"}
* Successful Docker Image Github Actions Pipeline for 4.0 branch:
Docker Build Test Pipeline (JVM):
https://github.com/apache/kafka/actions/runs/22615750194
Docker Build Test Pipeline (Native):
https://github.com/apache/kafka/actions/runs/22615760392
I will shortly write a blog post too.
Best,
Viktor
Re: [VOTE] 4.0.2 RC3
Posted by Viktor Somogyi-Vass via dev <de...@kafka.apache.org>.
Hi All,
We now have 3 binding votes from Andrew, Mickael and Christo, so I'd close
this vote and proceed with the release process.
Thank you for voting.
Viktor
On Fri, Mar 13, 2026 at 12:36 PM Christo Lolov <ch...@gmail.com>
wrote:
> Heya Viktor,
>
> I carried out the following checks to validate the release:
>
> * Ran the quickstarts against the Docker images
> * Read the Release Notes
> * Checked the workflow outputs
> * Built the source code and ran the quickstart against the resulting
> binaries
> * Ran the quickstart against the already compiled binaries
> * Did a few random walks through the Javadocs
> * Did a few random walks through the updated site documentation
>
> +1 (binding)
>
> Thanks for pushing for this!
>
> Best,
> Christo
>
> On Thu, 5 Mar 2026 at 16:09, Andrew Schofield <sc...@apache.org>
> wrote:
> >
> > Hi Viktor,
> > Thanks for running the release. I did the following to validate it:
> >
> > * Verified the gpg signatures
> > * Checked the release notes
> > * Built from source and ran client tests
> > * Ran the quickstart and console tools
> > * Checked the javadoc
> > * Pulled and ran the docker images
> > * Checked the docs
> >
> > +1 (binding)
> >
> > Thanks,
> > Andrew
> >
> > On 2026/03/04 16:54:36 Viktor Somogyi-Vass wrote:
> > > Hello Kafka users, developers and client-developers,
> > >
> > > This is the third candidate for release of Apache Kafka 4.0.2.
> > >
> > > This is a patch release and therefore it contains important bug fixes.
> > >
> > > Release notes for the 4.0.2 release:
> > >
> https://dist.apache.org/repos/dist/dev/kafka/4.0.2-rc3/RELEASE_NOTES.html
> > >
> > > *** Please download, test and vote by Wednesday, March 11.
> > >
> > > 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/4.0.2-rc3/
> > >
> > > * Docker release artifacts to be voted upon:
> > > apache/kafka:4.0.2-rc3
> > > apache/kafka-native:4.0.2-rc3
> > >
> https://dist.apache.org/repos/dist/dev/kafka/4.0.2-rc3/kafka_2.13-4.0.2.tgz
> > >
> > > * 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/4.0.2-rc3/javadoc/
> > >
> > > * Tag to be voted upon (off 4.0 branch) is the 4.0.2 tag:
> > > https://github.com/apache/kafka/releases/tag/4.0.2-rc3
> > >
> > > * Documentation: https://github.com/apache/kafka-site/pull/807
> > >
> > > * Successful CI builds for the 4.0 branch:
> > > Unit/integration tests:
> > > https://github.com/apache/kafka/actions/runs/22615674106
> > > System tests: test runs are available at
> > >
> https://drive.google.com/drive/folders/1K8nfXNgnSOwc61JhRQylICFivn7ZSMKq?usp=sharing
> > > There were some failures of which all but one are flaky (successful on
> > > rerun) and one is a known test issue:
> > >
> tests/kafkatest/tests/core/network_degrade_test.py::NetworkDegradeTest.test_rate@
> > >
> {"task_name":"rate-1000-latency-50","device_name":"eth0","latency_ms":50,"rate_limit_kbit":1000000,"metadata_quorum":"COMBINED_KRAFT"}
> > >
> > > * Successful Docker Image Github Actions Pipeline for 4.0 branch:
> > > Docker Build Test Pipeline (JVM):
> > > https://github.com/apache/kafka/actions/runs/22615750194
> > > Docker Build Test Pipeline (Native):
> > > https://github.com/apache/kafka/actions/runs/22615760392
> > >
> > > I will shortly write a blog post too.
> > >
> > > Best,
> > > Viktor
> > >
>
Re: [VOTE] 4.0.2 RC3
Posted by Christo Lolov <ch...@gmail.com>.
Heya Viktor,
I carried out the following checks to validate the release:
* Ran the quickstarts against the Docker images
* Read the Release Notes
* Checked the workflow outputs
* Built the source code and ran the quickstart against the resulting binaries
* Ran the quickstart against the already compiled binaries
* Did a few random walks through the Javadocs
* Did a few random walks through the updated site documentation
+1 (binding)
Thanks for pushing for this!
Best,
Christo
On Thu, 5 Mar 2026 at 16:09, Andrew Schofield <sc...@apache.org> wrote:
>
> Hi Viktor,
> Thanks for running the release. I did the following to validate it:
>
> * Verified the gpg signatures
> * Checked the release notes
> * Built from source and ran client tests
> * Ran the quickstart and console tools
> * Checked the javadoc
> * Pulled and ran the docker images
> * Checked the docs
>
> +1 (binding)
>
> Thanks,
> Andrew
>
> On 2026/03/04 16:54:36 Viktor Somogyi-Vass wrote:
> > Hello Kafka users, developers and client-developers,
> >
> > This is the third candidate for release of Apache Kafka 4.0.2.
> >
> > This is a patch release and therefore it contains important bug fixes.
> >
> > Release notes for the 4.0.2 release:
> > https://dist.apache.org/repos/dist/dev/kafka/4.0.2-rc3/RELEASE_NOTES.html
> >
> > *** Please download, test and vote by Wednesday, March 11.
> >
> > 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/4.0.2-rc3/
> >
> > * Docker release artifacts to be voted upon:
> > apache/kafka:4.0.2-rc3
> > apache/kafka-native:4.0.2-rc3
> > https://dist.apache.org/repos/dist/dev/kafka/4.0.2-rc3/kafka_2.13-4.0.2.tgz
> >
> > * 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/4.0.2-rc3/javadoc/
> >
> > * Tag to be voted upon (off 4.0 branch) is the 4.0.2 tag:
> > https://github.com/apache/kafka/releases/tag/4.0.2-rc3
> >
> > * Documentation: https://github.com/apache/kafka-site/pull/807
> >
> > * Successful CI builds for the 4.0 branch:
> > Unit/integration tests:
> > https://github.com/apache/kafka/actions/runs/22615674106
> > System tests: test runs are available at
> > https://drive.google.com/drive/folders/1K8nfXNgnSOwc61JhRQylICFivn7ZSMKq?usp=sharing
> > There were some failures of which all but one are flaky (successful on
> > rerun) and one is a known test issue:
> > tests/kafkatest/tests/core/network_degrade_test.py::NetworkDegradeTest.test_rate@
> > {"task_name":"rate-1000-latency-50","device_name":"eth0","latency_ms":50,"rate_limit_kbit":1000000,"metadata_quorum":"COMBINED_KRAFT"}
> >
> > * Successful Docker Image Github Actions Pipeline for 4.0 branch:
> > Docker Build Test Pipeline (JVM):
> > https://github.com/apache/kafka/actions/runs/22615750194
> > Docker Build Test Pipeline (Native):
> > https://github.com/apache/kafka/actions/runs/22615760392
> >
> > I will shortly write a blog post too.
> >
> > Best,
> > Viktor
> >
Re: [VOTE] 4.0.2 RC3
Posted by Mickael Maison <mi...@gmail.com>.
Hi,
I checked the following:
- checksums and signatures
- quickstart with Java 21
- quickstart with the docker jvm and native images
+1 (binding)
Thanks,
Mickael
On Thu, Mar 5, 2026 at 5:09 PM Andrew Schofield <sc...@apache.org> wrote:
>
> Hi Viktor,
> Thanks for running the release. I did the following to validate it:
>
> * Verified the gpg signatures
> * Checked the release notes
> * Built from source and ran client tests
> * Ran the quickstart and console tools
> * Checked the javadoc
> * Pulled and ran the docker images
> * Checked the docs
>
> +1 (binding)
>
> Thanks,
> Andrew
>
> On 2026/03/04 16:54:36 Viktor Somogyi-Vass wrote:
> > Hello Kafka users, developers and client-developers,
> >
> > This is the third candidate for release of Apache Kafka 4.0.2.
> >
> > This is a patch release and therefore it contains important bug fixes.
> >
> > Release notes for the 4.0.2 release:
> > https://dist.apache.org/repos/dist/dev/kafka/4.0.2-rc3/RELEASE_NOTES.html
> >
> > *** Please download, test and vote by Wednesday, March 11.
> >
> > 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/4.0.2-rc3/
> >
> > * Docker release artifacts to be voted upon:
> > apache/kafka:4.0.2-rc3
> > apache/kafka-native:4.0.2-rc3
> > https://dist.apache.org/repos/dist/dev/kafka/4.0.2-rc3/kafka_2.13-4.0.2.tgz
> >
> > * 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/4.0.2-rc3/javadoc/
> >
> > * Tag to be voted upon (off 4.0 branch) is the 4.0.2 tag:
> > https://github.com/apache/kafka/releases/tag/4.0.2-rc3
> >
> > * Documentation: https://github.com/apache/kafka-site/pull/807
> >
> > * Successful CI builds for the 4.0 branch:
> > Unit/integration tests:
> > https://github.com/apache/kafka/actions/runs/22615674106
> > System tests: test runs are available at
> > https://drive.google.com/drive/folders/1K8nfXNgnSOwc61JhRQylICFivn7ZSMKq?usp=sharing
> > There were some failures of which all but one are flaky (successful on
> > rerun) and one is a known test issue:
> > tests/kafkatest/tests/core/network_degrade_test.py::NetworkDegradeTest.test_rate@
> > {"task_name":"rate-1000-latency-50","device_name":"eth0","latency_ms":50,"rate_limit_kbit":1000000,"metadata_quorum":"COMBINED_KRAFT"}
> >
> > * Successful Docker Image Github Actions Pipeline for 4.0 branch:
> > Docker Build Test Pipeline (JVM):
> > https://github.com/apache/kafka/actions/runs/22615750194
> > Docker Build Test Pipeline (Native):
> > https://github.com/apache/kafka/actions/runs/22615760392
> >
> > I will shortly write a blog post too.
> >
> > Best,
> > Viktor
> >
Re: [VOTE] 4.0.2 RC3
Posted by Andrew Schofield <sc...@apache.org>.
Hi Viktor,
Thanks for running the release. I did the following to validate it:
* Verified the gpg signatures
* Checked the release notes
* Built from source and ran client tests
* Ran the quickstart and console tools
* Checked the javadoc
* Pulled and ran the docker images
* Checked the docs
+1 (binding)
Thanks,
Andrew
On 2026/03/04 16:54:36 Viktor Somogyi-Vass wrote:
> Hello Kafka users, developers and client-developers,
>
> This is the third candidate for release of Apache Kafka 4.0.2.
>
> This is a patch release and therefore it contains important bug fixes.
>
> Release notes for the 4.0.2 release:
> https://dist.apache.org/repos/dist/dev/kafka/4.0.2-rc3/RELEASE_NOTES.html
>
> *** Please download, test and vote by Wednesday, March 11.
>
> 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/4.0.2-rc3/
>
> * Docker release artifacts to be voted upon:
> apache/kafka:4.0.2-rc3
> apache/kafka-native:4.0.2-rc3
> https://dist.apache.org/repos/dist/dev/kafka/4.0.2-rc3/kafka_2.13-4.0.2.tgz
>
> * 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/4.0.2-rc3/javadoc/
>
> * Tag to be voted upon (off 4.0 branch) is the 4.0.2 tag:
> https://github.com/apache/kafka/releases/tag/4.0.2-rc3
>
> * Documentation: https://github.com/apache/kafka-site/pull/807
>
> * Successful CI builds for the 4.0 branch:
> Unit/integration tests:
> https://github.com/apache/kafka/actions/runs/22615674106
> System tests: test runs are available at
> https://drive.google.com/drive/folders/1K8nfXNgnSOwc61JhRQylICFivn7ZSMKq?usp=sharing
> There were some failures of which all but one are flaky (successful on
> rerun) and one is a known test issue:
> tests/kafkatest/tests/core/network_degrade_test.py::NetworkDegradeTest.test_rate@
> {"task_name":"rate-1000-latency-50","device_name":"eth0","latency_ms":50,"rate_limit_kbit":1000000,"metadata_quorum":"COMBINED_KRAFT"}
>
> * Successful Docker Image Github Actions Pipeline for 4.0 branch:
> Docker Build Test Pipeline (JVM):
> https://github.com/apache/kafka/actions/runs/22615750194
> Docker Build Test Pipeline (Native):
> https://github.com/apache/kafka/actions/runs/22615760392
>
> I will shortly write a blog post too.
>
> Best,
> Viktor
>