Hello again folks, I chatted with Jose offline about this issue and he explained we need to remove the --standalone flag to get kraft.version=0. I filed a ticket for this here: https://issues.apache.org/jira/browse/KAFKA-18987
I was able to run the tests I wanted and I found when I use the upgrade --release version flag, we are still saying we are upgrading kraft.version to 1 even though we do not. I don't think this is necessarily a blocker, but wanted to call it out. bin/kafka-features.sh --bootstrap-server localhost:9092 upgrade --release-version 4.0 group.version was upgraded to 1. kraft.version was upgraded to 1. metadata.version was upgraded to 25. transaction.version was upgraded to 2. bin/kafka-features.sh --bootstrap-server localhost:9092 describe Feature: eligible.leader.replicas.version SupportedMinVersion: 0 SupportedMaxVersion: 1 FinalizedVersionLevel: 0 Epoch: 189 Feature: group.version SupportedMinVersion: 0 SupportedMaxVersion: 1 FinalizedVersionLevel: 1 Epoch: 189 Feature: kraft.version SupportedMinVersion: 0 SupportedMaxVersion: 1 FinalizedVersionLevel: 0 Epoch: 189 Feature: metadata.version SupportedMinVersion: 3.3-IV3 SupportedMaxVersion: 4.0-IV3 FinalizedVersionLevel: 4.0-IV3 Epoch: 189 Feature: transaction.version SupportedMinVersion: 0 SupportedMaxVersion: 2 FinalizedVersionLevel: 2 Epoch: 189 I ran the remaining validations I had (running transactions bench, verifying expected behavior). In addition, I also verified the signatures, browsed the docs, looked at the tests and release artifacts. +1 (binding) from me with a strong recommendation to update some of the docs around KIP-853. Thanks, Justine On Fri, Mar 14, 2025 at 9:46 AM Justine Olshan <jols...@confluent.io> wrote: > Hi David, > > Thanks for this next release candidate. > > Maybe I'm missing something, but I was trying to test out some of the > changes that Jose provided, by configuring a static quorum > (kraft.version=0) and I seem to be unable to do so. > I set controller.quorum.voters=1@localhost:9093 as per how it looked in > 3.9 (with no controller.quorum.bootstrap.servers, but no matter what I do > it says "Cannot set kraft.version to 0 if KIP-853 configuration is > present. Try removing the --feature flag for kraft.version." > > Can someone help me out here? The documentation says: > > The static versus dynamic nature of the quorum is determined at the > time of formatting. Specifically, the quorum will be formatted as dynamic > if controller.quorum.voters is *not* present, and if the software version > is Apache Kafka 3.9 or newer. If you have followed the instructions earlier > in this document, you will get a dynamic quorum. > > But this seems incorrect. I'm hoping I'm just misunderstanding the > documentation and not that there is another issue. > > Thanks, > > Justine > > On Fri, Mar 14, 2025 at 9:22 AM Bill Bejeck <bbej...@apache.org> wrote: > >> Hi David, >> >> I verified the latest RC with the following steps: >> >> - Verified the signatures >> - Built from source >> - Ran the unit tests (same single failure from before, but otherwise >> all >> good) >> - Executed the quickstart against the built source code. >> - Ran the streams quickstart. >> - Tested the apache/kafka and apache/kafka-native docker images with >> the >> quickstart >> - Spot checked the javadoc and documentation. >> >> +1(binding) >> >> Thanks, >> Bill >> >> On Fri, Mar 14, 2025 at 10:36 AM Lianet M. <liane...@gmail.com> wrote: >> >> > Hi David, I verified the new RC with the following steps: >> > >> > - Checked system tests run: there were 2 new failures in connect that we >> > didn't have in the previous RC (test_broker_compatibility and >> > test_pause_state_persistent). I ran them locally and they both pass (so >> > based on this and the error msg seems like just flakiness) >> > - Build from src with java 17, followed the quickstart and played with >> > consume/produce & topic management with the command line tools >> > - Run client examples from the examples module (java 17) >> > - Tested consuming in groups with both classic and new consumer protocol >> > - Tested the consumer group online migration & the command line new >> tools >> > to visualize/track the live migration >> > - Build clients with java 11 , run unit and integration tests. >> > - Run client examples from the examples module (java 11) >> > >> > +1 (non-binding) >> > >> > Thanks! >> > Lianet >> > >> > On Fri, Mar 14, 2025 at 9:28 AM David Arthur <mum...@gmail.com> wrote: >> > >> > > David, thanks for running this behemoth of a release. >> > > >> > > With the help of my coworker Mahsa Seifikar, we have verified the >> > following >> > > upgrade scenario: >> > > >> > > * Provision a ZK based Kafka cluster on 3.5 and create some topics >> > > * Upgrade to 3.9 >> > > * Migrate to KRaft >> > > * Upgrade to 4.0 >> > > >> > > We found a few docs issues which have since been fixed. One minor 3.9 >> > docs >> > > issue is still pending, but that's not a blocker. >> > > >> > > I also ran through the quickstart. >> > > >> > > +1 binding >> > > >> > > -David A >> > > >> > > On Fri, Mar 14, 2025 at 7:57 AM Federico Valeri <fedeval...@gmail.com >> > >> > > wrote: >> > > >> > > > Hi David, I've tested the RC4 and this is what I've done: >> > > > >> > > > - Used the binaries to create a cluster and run clients from >> exampled >> > > > module >> > > > - Tested the upgrade issue we found in KAFKA-18979 >> > > > - Tested the dynamic quorum feature (both scale up and down) >> > > > - Tested group.protocol=consumer with a simple Java app >> > > > - Browsed the documentation and javadoc >> > > > - Tested the Docker images >> > > > >> > > > +1 non binding >> > > > >> > > > Thanks for running the release. >> > > > >> > > > Cheers >> > > > Fede >> > > > >> > > > >> > > > On Fri, Mar 14, 2025 at 11:11 AM David Jacot <da...@apache.org> >> wrote: >> > > > > >> > > > > Hello Kafka users, developers and client-developers, >> > > > > >> > > > > This is the fourth candidate for release of Apache Kafka 4.0.0. >> > > > > >> > > > > - This is the first release without Apache Zookeeper >> > > > > - The Next Generation of the Consumer Rebalance Protocol is >> Generally >> > > > Available >> > > > > - The Transactions Server-Side Defense (Phase 2) is Generally >> > Available >> > > > > - Queues for Kafka is in Early Access >> > > > > - Kafka uses log4j2 >> > > > > - Drop broker and tools support for Java 11 >> > > > > - Remove old client protocol API versions >> > > > > >> > > > > Release notes for the 4.0.0 release: >> > > > > >> > > > >> > > >> > >> https://dist.apache.org/repos/dist/dev/kafka/4.0.0-rc4/RELEASE_NOTES.html >> > > > > >> > > > > *** Please download, test and vote by Monday, March 17, 9am 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/4.0.0-rc4/ >> > > > > >> > > > > * Docker release artifacts to be voted upon: >> > > > > apache/kafka:4.0.0-rc4 >> > > > > apache/kafka-native:4.0.0-rc4 >> > > > > >> > > > > * 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/4.0.0-rc4/javadoc/ >> > > > > >> > > > > * Tag to be voted upon (off 4.0 branch) is the 4.0.0 tag: >> > > > > https://github.com/apache/kafka/releases/tag/4.0.0-rc4 >> > > > > >> > > > > * Documentation: >> > > > > https://kafka.apache.org/40/documentation.html >> > > > > >> > > > > * Protocol: >> > > > > https://kafka.apache.org/40/protocol.html >> > > > > >> > > > > * Successful CI builds for the 4.0 branch: >> > > > > Unit/integration tests: >> > > > https://github.com/apache/kafka/actions/runs/13846870683 >> > > > > System tests: >> > > > >> > > >> > >> https://confluent-open-source-kafka-branch-builder-system-test-results.s3-us-west-2.amazonaws.com/trunk/2025-03-13--001.6a14e68a-4791-44eb-a6be-24ce25bc1678--1741882266--apache--4.0--8f765a1886/report.html >> > > > > >> > > > > * Successful Docker Image Github Actions Pipeline for 4.0 branch: >> > > > > Docker Build Test Pipeline (JVM): >> > > > > https://github.com/apache/kafka/actions/runs/13852844456 >> > > > > Docker Build Test Pipeline (Native): >> > > > > https://github.com/apache/kafka/actions/runs/13853116713 >> > > > > >> > > > > /************************************** >> > > > > >> > > > > Thanks, >> > > > > David Jacot >> > > > >> > > >> > > >> > > -- >> > > David Arthur >> > > >> > >> >
