Re: [VOTE] 4.1.2 RC1

Hi Andrew,

Thanks for running the release.

* Built from source with openjdk 17 and 21
* Verified basic produce/consume
* Validated the checksums and keys
* Ran basic quickstart using apache/kafka:4.1.2-rc1 and apache/kafka-native:4.1.2-rc1 docker image

The protocol link is changed to https://kafka.apache.org/41/design/protocol/. I created a PR to fix it. https://github.com/apache/kafka/pull/21628

Thank you,
PoAn

> On Mar 2, 2026, at 6:39 PM, Viktor Somogyi-Vass <viktorsomogyi@gmail.com> wrote:
>
> Hi Andrew,
>
> * verified the gpg signatures
> * looked at the release notes
> * checked that the artifacts can be resolved in maven
> * ran the quickstart and clients against them
> * ran the docker quickstart
> * checked the docs
>
> Apart from the protocol link pointing to the old docs (I think) all seems
> good.
>
> +1 (binding)
>
> Thanks for running the release!
>
> Viktor
>
> On Wed, Feb 25, 2026 at 2:13 PM Andrew Schofield <schofielaj@apache.org>
> wrote:
>
>> Hello Kafka users, developers and client-developers,
>>
>> This is the first candidate for release of Apache Kafka 4.1.2.
>>
>> This is the second bug fix release for Apache Kafka 4.1 with fixes as
>> described in the release notes.
>>
>> Release notes for the 4.1.2 release:
>> https://dist.apache.org/repos/dist/dev/kafka/4.1.2-rc1/RELEASE_NOTES.html
>>
>> *** Please download, test and vote by Wednesday, March 4 2026, 9am UTC.
>>
>> Kafka's KEYS file containing PGP keys we use to sign the release:
>> https://dist.apache.org/repos/dist/release/kafka/KEYS
>>
>> * Release artifacts to be voted upon (source and binary):
>> https://dist.apache.org/repos/dist/dev/kafka/4.1.2-rc1/
>>
>> * Docker release artifacts to be voted upon:
>> apache/kafka:4.1.2-rc1
>> apache/kafka-native:4.1.2-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/4.1.2-rc1/javadoc/
>>
>> * Tag to be voted upon (off 4.1 branch) is the 4.1.2 tag:
>> https://github.com/apache/kafka/releases/tag/4.1.2-rc1
>>
>> * Documentation:
>> https://kafka.apache.org/41/documentation.html
>>
>> * Protocol:
>> https://kafka.apache.org/41/protocol.html
>>
>> * Successful CI builds for the 4.1 branch:
>> Unit/integration tests:
>> https://github.com/apache/kafka/actions/runs/22355871722
>>
>> System tests:
>> https://confluent-open-source-kafka-branch-builder-system-test-results.s3-us-west-2.amazonaws.com/trunk/2026-02-24--002.59fb52a4-4668-45ab-9ffa-bd60aad81cd4--1771979898--confluentinc--4.1--631c2c8761/report.html
>> One failure which has been present across several releases:
>> -
>> tests/kafkatest/tests/tools/replica_verification_test.py::ReplicaVerificationToolTest.test_replica_lags@
>> {"metadata_quorum":"ISOLATED_KRAFT"}
>>
>> * Successful Docker Image Github Actions Pipeline for 4.1 branch:
>> Docker Build Test Pipeline (JVM):
>> https://github.com/apache/kafka/actions/runs/22391397131
>> Docker Build Test Pipeline (Native):
>> https://github.com/apache/kafka/actions/runs/22392649516
>>
>> Thanks,
>> Andrew Schofield
>>