hi Christo Kevin found a compatibility issue (KAFKA-19719) that causes an error when using `controller.quorum.voters` together with `--no-initial-controllers`. Admittedly, that is a strange usage, but it worked in 3.9.0 since `--no-initial-controllers` was treated as a no-op.
The bug was introduced in 3.9.1 and 4.0.0, and a patch is already available. Do you want to include the patch in 4.0.1, or should I do the cherry-pick after 4.0.1 is released? Best, Chia-Ping On 2025/09/11 10:09:00 Christo Lolov wrote: > Hello Kafka users, developers and client-developers, > > This is the third candidate for release of Apache Kafka 4.0.1. > > Since this is a patch version it contains the bug fixes outlined in the > release notes below! > > Release notes for the 4.0.1 release: > https://dist.apache.org/repos/dist/dev/kafka/4.0.1-rc2/RELEASE_NOTES.html > > *** Please download, test and vote by Wednesday September 17. > > 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/4.0.1-rc2/ > > * Docker release artifacts to be voted upon: > apache/kafka:4.0.1-rc2 > apache/kafka-native:4.0.1-rc2 > > * 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/4.0.1-rc2/javadoc/ > > * Tag to be voted upon (off 4.0 branch) is the 4.0.1 tag: > https://github.com/apache/kafka/releases/tag/4.0.1-rc2 > > * Successful CI builds for the 4.0 branch: > Unit/integration tests: > https://github.com/apache/kafka/actions/runs/17586456207 > > * Successful Docker Image Github Actions Pipeline for 4.0 branch: > Docker Build Test Pipeline (JVM): > https://github.com/apache/kafka/actions/runs/17586731957 > Docker Build Test Pipeline (Native): > https://github.com/apache/kafka/actions/runs/17587113226 > > * Documentation updates for website and Javadocs > - https://github.com/apache/kafka-site/pull/719 > - https://github.com/apache/kafka-site/pull/723 > > Thanks, > Christo >
