Hi Josep,

Thanks for the validation!
About the "LICENSE-binary misalignments", I hate to say that but it looks
like we need a new RC to fix it...>.<
Thanks to github action, we can detect this kind of license issue during PR
validation after 4.0.

I'll close the vote and create a new RC.

Thank all the members who helped validate this RC.

Luke

On Fri, May 9, 2025 at 6:53 PM Josep Prat <josep.p...@aiven.io.invalid>
wrote:

> Hi,
> I did the following:
> - verify all signatures
> - build from source (OpenJDK Temurin 17 + Scala 2.13)
>   - This test fails consistently on my machine, but I tried with 3.8 and
> 3.9.0 and it also fails LazyDownConversionRecordsTest >
> testConversion(CompressionType, byte, boolean) > compressionType=gzip,
> toMagic=1, overflow=false. I'll try to investigate if something is wrong on
> my end.
> - Run quick start with KRaft
> - Run quick start with ZK
> - Verified JavaDocs and verified that backlinks to Oracle's Java work
> - LICENSE-binary has one family of dependencies with the wrong version ->
> Netty version is 4.1.119.Final, however in LICENSE-binary we have
> 4.1.115.Final. The misalignment happened in this PR:
> https://github.com/apache/kafka/pull/19484 and this is the PR that fixes
> it: https://github.com/apache/kafka/pull/19665
>
> I don't recall right now if LICENSE-binary misalignments are a release
> blocker or not.
>
> > (https://kafka.apache.org/40/documentation/#quickstart) is outdated?
> Matthias, the link you share is under the 40 folder so I think you
> navigated out of the 3.9 docs and back to the general docs to the "current"
> version 4.0.
>
> Best,
>
> On Fri, May 9, 2025 at 6:46 AM TengYao Chi <kiting...@gmail.com> wrote:
>
> > Hi Matthias,
> >
> > Thanks for the testing and vote.
> > Are you saying that when browsing the 3.9.1 documentation, the top-level
> > links still point to the 4.0 QuickStart?
> > Could you please elaborate on the issue in more detail?
> >
> > Best,
> > TengYao
> >
> > Matthias J. Sax <mj...@apache.org>於 2025年5月9日 週五,上午5:57寫道:
> >
> > > Hi,
> > >
> > > I did the following:
> > >
> > > - verify all signatures
> > > - build from source (OpenJDK 17, Scala 2.13)
> > > - run all tests
> > >    `OffsetsApiIntegrationTest` failed, but re-run passed
> > > - run quick start (core/connect/streams) using Scala 2.12 binaries
> > > (KRaft mode)
> > > - downloaded both docker images; started them up, and re-run parts of
> > > quickstart
> > >
> > >
> > > Btw: seems the top-level quickstart
> > > (https://kafka.apache.org/quickstart) which is not part of the "docs
> > > section" (https://kafka.apache.org/40/documentation/#quickstart) is
> > > outdated?
> > >
> > >
> > > +1 (binding)
> > >
> > >
> > > -Matthias
> > >
> > > On 5/6/25 1:36 AM, Luke Chen wrote:
> > > > Hi Justine,
> > > >
> > > > Thank you for your validation.
> > > > Nice catch for the documentation issue!
> > > > We'll fix it soon.
> > > >
> > > > Thank you.
> > > > Luke
> > > >
> > > >
> > > >
> > > > On Sat, May 3, 2025 at 3:12 AM Justine Olshan
> > > <jols...@confluent.io.invalid>
> > > > wrote:
> > > >
> > > >> Hey folks,
> > > >> Thanks again for your patience!
> > > >>
> > > >> I've done the following validations:
> > > >> * Verified signatures
> > > >> * Built from source with Java 23
> > > >> * Quickstarts with ZK and Kraft + minor workloads
> > > >> * Took a quick look at the documentation -- one thing I noticed is
> in
> > > the
> > > >> 3.9 docs, we say the latest version is 3.9.0 from
> > > >>
> > https://github.com/apache/kafka/blob/3.9.1-rc1/docs/js/templateData.js
> > > >> Should this
> > > >> be updated? It seems like other patch releases have this change in
> the
> > > RC
> > > >> tag.
> > > >> * Browsed some of the other resources and test results
> > > >>
> > > >> I think maybe the website issue doesn't require a new RC, but it may
> > be
> > > >> good to fix. Barring that, +1 (binding) from me.
> > > >>
> > > >> Thanks,
> > > >> Justine
> > > >>
> > > >>
> > > >> On Fri, May 2, 2025 at 9:27 AM Justine Olshan <jols...@confluent.io
> >
> > > >> wrote:
> > > >>
> > > >>> I will try to take a look today. Thanks folks
> > > >>>
> > > >>> Justine
> > > >>>
> > > >>> On Thu, May 1, 2025 at 7:42 PM Luke Chen <show...@gmail.com>
> wrote:
> > > >>>
> > > >>>> Hi all,
> > > >>>>
> > > >>>> So far, we've got 3 non-binding votes for v3.9.1 release.
> > > >>>> Thanks everyone who helped validate this!
> > > >>>>
> > > >>>> Could PMC members (and contributors) take some time to help
> validate
> > > >> this
> > > >>>> RC build?
> > > >>>>
> > > >>>> Thanks.
> > > >>>> Luke
> > > >>>>
> > > >>>> Thanks.
> > > >>>> Luke
> > > >>>>
> > > >>>> On Tue, Apr 29, 2025 at 10:34 AM TengYao Chi <
> frankvi...@apache.org
> > >
> > > >>>> wrote:
> > > >>>>
> > > >>>>> Hi everyone,
> > > >>>>>
> > > >>>>> I want to bump this thread since the RC vote is about to be due.
> > > >>>>> Thanks for your attention.
> > > >>>>>
> > > >>>>> Best,
> > > >>>>> TengYao
> > > >>>>>
> > > >>>>> Edoardo Comar <edoardli...@gmail.com> 於 2025年4月25日 週五 下午9:32寫道:
> > > >>>>>
> > > >>>>>> Luke,  TengYao
> > > >>>>>> https://github.com/apache/kafka/pull/19563
> > > >>>>>>
> > > >>>>>> On Fri, 25 Apr 2025 at 12:18, Edoardo Comar <
> > edoardli...@gmail.com>
> > > >>>>> wrote:
> > > >>>>>>>
> > > >>>>>>> Hi Luke, as discussed in the issue
> > > >>>>>>> https://github.com/apache/kafka-site/pull/685
> > > >>>>>>>
> > > >>>>>>> On Thu, 24 Apr 2025 at 12:04, 黃竣陽 <s7133...@gmail.com> wrote:
> > > >>>>>>>>
> > > >>>>>>>> Hello TengYao,
> > > >>>>>>>>
> > > >>>>>>>> I've completed the following tests on my local machine:
> > > >>>>>>>>
> > > >>>>>>>> - Built from source using JDK 21 & JDK 17 (Zulu)
> > > >>>>>>>> - Executed all unit and integration tests
> > > >>>>>>>> - Ran the quickstart successfully
> > > >>>>>>>> - test console consumer and producer
> > > >>>>>>>>
> > > >>>>>>>> Best Regards
> > > >>>>>>>> Jiunn-Yang
> > > >>>>>>>>
> > > >>>>>>>>> Luke Chen <show...@gmail.com> 於 2025年4月24日 下午2:32 寫道:
> > > >>>>>>>>>
> > > >>>>>>>>> Hi all,
> > > >>>>>>>>>
> > > >>>>>>>>> Update the system tests result link:
> > > >>>>>>>>>
> > > >>>>>>
> > > >>>>
> > > >>
> > >
> https://drive.google.com/drive/folders/1lf7EH-m8PNPGfv7Fj3-FLnz_UH3un41n
> > > >>>>>>>>>
> > > >>>>>>>>> Summary: All the 1st run failed tests can pass after re-run.
> > > >> So
> > > >>>>> they
> > > >>>>>> are
> > > >>>>>>>>> just flaky. No issues found.
> > > >>>>>>>>>
> > > >>>>>>>>> Thanks.
> > > >>>>>>>>> Luke
> > > >>>>>>>>>
> > > >>>>>>>>>
> > > >>>>>>>>> On Wed, Apr 23, 2025 at 11:57 PM Kuan Po Tseng <
> > > >>>>> brandb...@apache.org>
> > > >>>>>> wrote:
> > > >>>>>>>>>
> > > >>>>>>>>>> Hi TengYao,
> > > >>>>>>>>>>
> > > >>>>>>>>>> I did some testing on the upgrade path:
> > > >>>>>>>>>> - Set up a ZK-based Kafka cluster on 3.5, created some
> > > >> topics,
> > > >>>> and
> > > >>>>>>>>>> produced a bunch of messages
> > > >>>>>>>>>> - Upgraded to 3.9.1-RC1
> > > >>>>>>>>>> - Migrated to KRaft
> > > >>>>>>>>>>
> > > >>>>>>>>>> And everything worked smoothly!
> > > >>>>>>>>>>
> > > >>>>>>>>>> Thanks a lot for all your hard work!
> > > >>>>>>>>>>
> > > >>>>>>>>>> Best,
> > > >>>>>>>>>> Kuan-Po Tseng
> > > >>>>>>>>>>
> > > >>>>>>>>>> On 2025/04/23 09:00:00 TengYao Chi wrote:
> > > >>>>>>>>>>> Hello Kafka users, developers, and client-developers,
> > > >>>>>>>>>>>
> > > >>>>>>>>>>> This is the second candidate for the release of Apache
> Kafka
> > > >>>>> 3.9.1.
> > > >>>>>>>>>>> This RC fixed the release tag off to a temporary branch
> > > >> issue
> > > >>>>>>>>>> (KAFKA-19166
> > > >>>>>>>>>>> <https://issues.apache.org/jira/browse/KAFKA-19166>)
> > > >> compared
> > > >>>>>> with RC0.
> > > >>>>>>>>>>>
> > > >>>>>>>>>>> This is a bug-fix release with several fixes, and most
> > > >>>>>> importantly, it
> > > >>>>>>>>>> adds
> > > >>>>>>>>>>> Java 23 support for 3.9
> > > >>>>>>>>>>>
> > > >>>>>>>>>>> Release notes for the 3.9.1 release:
> > > >>>>>>>>>>>
> > > >>>>>>>>>>
> > > >>>>>>
> > > >>>>>
> > > >>>>
> > > >>
> > >
> >
> https://dist.apache.org/repos/dist/dev/kafka/3.9.1-rc1/RELEASE_NOTES.html
> > > >>>>>>>>>>>
> > > >>>>>>>>>>> Please download, test, and vote by *Wednesday, April 30,
> > > >> 9:00
> > > >>>> AM
> > > >>>>>> PT*
> > > >>>>>>>>>>>
> > > >>>>>>>>>>> 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/3.9.1-rc1/
> > > >>>>>>>>>>>
> > > >>>>>>>>>>> * Docker release artifacts to be voted upon:
> > > >>>>>>>>>>> apache/kafka:3.9.1-rc1
> > > >>>>>>>>>>>
> > > >>>>>>>>>>
> > > >>>>>>
> > > >>>>>
> > > >>>>
> > > >>
> > >
> >
> https://hub.docker.com/layers/apache/kafka/3.9.1-rc1/images/sha256-459c4e12260a1426a4f53c357d6e0c52b58ed70ff4118de1ffceb3f131d64a2a
> > > >>>>>>>>>>>
> > > >>>>>>>>>>> apache/kafka-native:3.9.1-rc1
> > > >>>>>>>>>>>
> > > >>>>>>>>>>
> > > >>>>>>
> > > >>>>>
> > > >>>>
> > > >>
> > >
> >
> https://hub.docker.com/layers/apache/kafka-native/3.9.1-rc1/images/sha256-be97bd4564444cae8a9880a4eaa1a594df2d2e5ea0b8990228751cdef278faca
> > > >>>>>>>>>>>
> > > >>>>>>>>>>> * 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/3.9.1-rc1/javadoc/
> > > >>>>>>>>>>>
> > > >>>>>>>>>>> * Tag to be voted upon (off 3.9 branch) is the 3.9.1 tag:
> > > >>>>>>>>>>> https://github.com/apache/kafka/releases/tag/3.9.1-rc1
> > > >>>>>>>>>>>
> > > >>>>>>>>>>> * Documentation:
> > > >>>>>>>>>>> https://kafka.apache.org/39/documentation.html
> > > >>>>>>>>>>>
> > > >>>>>>>>>>> * Protocol:
> > > >>>>>>>>>>> https://kafka.apache.org/39/protocol.html
> > > >>>>>>>>>>>
> > > >>>>>>>>>>> * CI builds for the 3.9 branch:
> > > >>>>>>>>>>> Unit/integration tests (There are some flaky tests):
> > > >>>>>>>>>>>
> > > >> https://ci-builds.apache.org/job/Kafka/job/kafka/job/3.9/194/
> > > >>>>>>>>>>>
> > > >>>>>>>>>>> System tests:
> > > >>>>>>>>>>> http://jenkins.opensource4you.tw/job/kafka-e2e/304/
> > > >>>>>>>>>>>
> > > >>>>>>>>>>> * Successful Docker Image Github Actions Pipeline for 3.9
> > > >>>> branch:
> > > >>>>>>>>>>> Docker Build Test Pipeline (JVM):
> > > >>>>>>>>>>> https://github.com/apache/kafka/actions/runs/14597360082
> > > >>>>>>>>>>> Docker Build Test Pipeline (Native):
> > > >>>>>>>>>>> https://github.com/apache/kafka/actions/runs/14597364430
> > > >>>>>>>>>>>
> > > >>>>>>>>>>>
> > > >>>>>>>>>>> Thanks,
> > > >>>>>>>>>>> TengYao Chi
> > > >>>>>>>>>>>
> > > >>>>>>>>>>
> > > >>>>>>>>
> > > >>>>>>
> > > >>>>>
> > > >>>>
> > > >>>
> > > >>
> > > >
> > >
> > >
> >
>
>
> --
> [image: Aiven] <https://www.aiven.io>
>
> *Josep Prat*
> Sr. Engineering Director, Streaming Services, *Aiven*
> josep.p...@aiven.io   |   +491715557497
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