Great, thanks!
On Mon, Feb 2, 2026 at 12:33 PM Christo Lolov <[email protected]> wrote: > > Hello! > > The DLQ issue has been resolved and cherry-picked on 4.2. > > Mickael, I cherry-picked KAFKA-19571 as well! > > I am now closing this vote and will shortly be raising the next RC. > > Best, > Christo > > On Fri, 30 Jan 2026 at 17:27, Mickael Maison <[email protected]> > wrote: > > > Hi Christo, > > > > If there's another RC, can we cherry pick > > https://issues.apache.org/jira/browse/KAFKA-19571? > > > > It's already backported to 4.1, and I'll backport to 4.0 next week. > > > > Thanks, > > Mickael > > > > On Thu, Jan 29, 2026 at 6:21 PM Bill Bejeck <[email protected]> wrote: > > > > > > Hi Chia-Ping, > > > > > > Yes, you are correct, my mistake. We should get this in. > > > > > > Thanks, > > > Bill > > > > > > On Thu, Jan 29, 2026 at 11:39 AM Chia-Ping Tsai <[email protected]> > > wrote: > > > > > > > Thanks for the feedback, Bill. > > > > > > > > Actually, I double-checked KAFKA-16505, and it appears this feature > > > > (KIP-1034) is new in 4.2.0. > > > > > > > > Please correct me if I misunderstood. > > > > > > > > Best, > > > > > > > > Chia-Ping > > > > > > > > Bill Bejeck <[email protected]> 於 2026年1月30日週五 上午12:19寫道： > > > > > > > > > Hi Chia-Ping, > > > > > > > > > > Thanks for mentioning this. Since this commit was in the previous > > > > release > > > > > and not a regression, I'm not sure that it meets the bar for a > > blocker. > > > > > But I don't have a strong opinion, so I'll leave it to Christo to > > decide. > > > > > > > > > > Regards, > > > > > Bill > > > > > > > > > > On Thu, Jan 29, 2026 at 7:57 AM Chia-Ping Tsai <[email protected]> > > > > > wrote: > > > > > > > > > > > hi Christo > > > > > > > > > > > > I have spotted a potential blocker, and a patch will be ready soon > > > > > > > > > > > > https://github.com/apache/kafka/pull/17942#discussion_r2737868443 > > > > > > > > > > > > Best, > > > > > > Chia-Ping > > > > > > > > > > > > On 2026/01/27 15:50:25 Christo Lolov wrote: > > > > > > > Hello Kafka users, developers and client-developers, > > > > > > > > > > > > > > This is the RC2 candidate for release of Apache Kafka 4.2.0. > > > > > > > > > > > > > > This release has many exciting changes: > > > > > > > * Kafka Queues (Share Groups) is now production-ready with new > > > > > > > features like the RENEW acknowledgement type for extended > > processing > > > > > > > times, adaptive batching for coordinators, and comprehensive lag > > > > > > > metrics. > > > > > > > * Kafka Streams brings the server-side rebalance protocol to GA > > with > > > > a > > > > > > > limited feature set, adds dead letter queue support in exception > > > > > > > handlers, introduces anchored wall-clock punctuation for > > > > deterministic > > > > > > > scheduling, and gives users full control over whether to send a > > leave > > > > > > > group request on closing. > > > > > > > * This release also delivers significant improvements to > > consistency > > > > > > > and observability: CLI tools now feature standardized arguments > > like > > > > > > > --bootstrap-server across all tools, metric naming has been > > corrected > > > > > > > to follow the kafka.COMPONENT convention, and new idle ratio > > metrics > > > > > > > provide better visibility into controller and MetadataLoader > > > > > > > performance. > > > > > > > * Security is enhanced with a new allowlist connector client > > > > > > > configuration override policy, while thread-safety improvements > > to > > > > > > > RecordHeader eliminate concurrency risks. > > > > > > > * Additional highlights include external schema support in > > > > > > > JsonConverter for reduced message sizes, dynamic configuration > > for > > > > > > > remote log manager thread pools, and rack ID exposure in the > > Admin > > > > API > > > > > > > for consumer and share group members. > > > > > > > > > > > > > > Release notes for the 4.2.0 release: > > > > > > > > > > > > > > > > > > > > > > > > https://dist.apache.org/repos/dist/dev/kafka/4.2.0-rc2/RELEASE_NOTES.html > > > > > > > > > > > > > > *** Please download, test and vote by Friday, January 30, 5pm UTC > > > > > > > > > > > > > > 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/4.2.0-rc2/ > > > > > > > > > > > > > > * Docker release artifacts to be voted upon: > > > > > > > apache/kafka:4.2.0-rc2 > > > > > > > apache/kafka-native:4.2.0-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/4.2.0-rc2/javadoc/index.html > > > > > > > > > > > > > > * Tag to be voted upon (off 4.2 branch) is the 4.2.0 tag: > > > > > > > https://github.com/apache/kafka/releases/tag/4.2.0-rc2 > > > > > > > > > > > > > > * Documentation: > > > > > > > * Protocol: > > > > > > > https://github.com/apache/kafka-site/pull/785 > > > > > > > > > > > > > > * Successful CI builds for the 4.2 branch: > > > > > > > Unit/integration tests: The ongoing build for the 4.2.0-rc2 tag > > can > > > > be > > > > > > found > > > > > > > at > > > > > > > > > > > > https://github.com/apache/kafka/actions/runs/21398201956/job/61611167690 > > > > > > > > > > > > > > System tests: I have started the tests in my environment and will > > > > share > > > > > > test > > > > > > > results in the next ~24 hours. > > > > > > > > > > > > > > * Successful Docker Image Github Actions Pipeline for 4.2 branch: > > > > > > > Docker Build Test Pipeline (JVM): > > > > > > > https://github.com/apache/kafka/actions/runs/21402423697 > > > > > > > Docker Build Test Pipeline (Native): > > > > > > > https://github.com/apache/kafka/actions/runs/21398799585 > > > > > > > > > > > > > > Thanks, > > > > > > > Christo > > > > > > > > > > > > > > > > > > > > > > > >
