Kafka

hi Mark I've added the root cause to the jira ticket. We can continue the discussion there Best, Chia-Ping Marcus Paget < marcuspaget@gmail.com > 於 2026年2月28日週六 上午2:02寫道： > Hello Kafka Users and Developers, > > For KAFKA-19652 - Consumer throughput drops by 10 times with Kafka v3.9.0 > in ZK mode > > I wanted to understand if this is a known issue or an isolated edge case. > It was reported back in August 2025 and subsequently confirmed by 2 other > people, able to reproduce the throughput drop. Although nothing > specifically identifying as a blocker for upgrades to this version or > later. > > Having min.insync.replicas=2 I guess is fairly common, so this would > affect many installations. > > Thanks, > Mark >

Hello Kafka Users and Developers, For KAFKA-19652 - Consumer throughput drops by 10 times with Kafka v3.9.0 in ZK mode I wanted to understand if this is a known issue or an isolated edge case. It was reported back in August 2025 and subsequently confirmed by 2 other people, able to reproduce the throughput drop. Although nothing specifically identifying as a blocker for upgrades to this version or later. Having min.insync.replicas=2 I guess is fairly common, so this would affect many installations. Thanks, Mark

> On Feb 16, 2026, at 1:14 AM, Apoorva Maheshwari via users < users@kafka.apache.org > wrote: > > Hello Team, > > Can you please confirm this pattern, that when we get any vulnerability of jetty and fix from Jetty is available, how soon Kafka release a new version with this Jetty? If you are urgently needing to adopt a Jetty release on your own schedule, rather than Kafka's schedule, you can always adopt new Jetty with your current Kafka version using Maven's <dependencyManagement> feature. This works for most projects, not just Kafka. Of course then you should test that the new combination works acceptably to your requirements, but it at least gives you an independent path forward without needing to pressure Kafka maintainers on new releases with dependency updates, until the normal release process delivers a fixed Kafka artifact. > > Regards, > Apoorva Maheshwari > > From: Apoorva Maheshwari > Sent: 13 Febr...

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...

Sachin, thanks a lot for your interest. Please read up on how to get started to contribute to ASF projects: https://www.apache.org/foundation/getinvolved.html In particular read about "how to become a committer", which is usually the first step before one gets invited to join the PMC: https://community.apache.org/contributors/ There is also more material about it on the Kafka web page: https://kafka.apache.org/community/developer/#becoming-a-committer More about "roles" in the ASF: https://www.apache.org/foundation/how-it-works/#roles Hope this helps, -Matthias On 2/23/26 5:46 PM, Sachin Bal wrote: > Hello All, > > I too am interested in contributing to the PMC. Can someone please let me > know the eligibility of applying to the same? Thanks in advance > > I look forward to hearing from you > > Kind Regards > Sachin Bal > > > On Mon, 23 Feb, 2026, 05:44 Matthias J. Sax, ...

Hello All, I too am interested in contributing to the PMC. Can someone please let me know the eligibility of applying to the same? Thanks in advance I look forward to hearing from you Kind Regards Sachin Bal On Mon, 23 Feb, 2026, 05:44 Matthias J. Sax, < mjsax@apache.org > wrote: > Dear all, > > The Project Management Committee (PMC) for Apache Kafka is pleased to > announce Andrew Schofield as a new PMC member. > > Andrew has been a Kafka committer since November 2024. He has remained > very active in the community since then, and it's my pleasure to > announce that he has accepted our invitation to become a member of the > Kafka PMC. > > Congratulation Andrew! > > > Matthias, on behalf of the Apache Kafka PMC >

Congratulations Andrew!! On Sun, Feb 22, 2026, at 4:14 PM, Matthias J. Sax wrote: > Dear all, > > The Project Management Committee (PMC) for Apache Kafka is pleased to > announce Andrew Schofield as a new PMC member. > > Andrew has been a Kafka committer since November 2024. He has remained > very active in the community since then, and it's my pleasure to > announce that he has accepted our invitation to become a member of the > Kafka PMC. > > Congratulation Andrew! > > > Matthias, on behalf of the Apache Kafka PMC >

Congrats, Viktor! On Mon, Feb 23, 2026, at 19:25, Mickael Maison wrote: > Congratulations! > > On Mon, Feb 23, 2026 at 7:12 PM Chris Egerton < fearthecellos@gmail.com > wrote: > > > > Congrats Viktor! > > > > On Mon, Feb 23, 2026, 13:09 Matthias J. Sax < mjsax@apache.org > wrote: > > > > > Dear all, > > > > > > The Project Management Committee (PMC) for Apache Kafka is pleased to > > > announce Viktor Somogyi-Vass as a new PMC member. > > > > > > Viktor has been a Kafka committer since December 2022. He has remained > > > very active in the community since then, and it's my pleasure to > > > announce that he has accepted our invitation to become a member of the > > > Kafka PMC. > > > > > > Congratulation Viktor! > > > > > > > > > Matthias, on behalf of the Apache Kafka PMC > ...

Congratulations! On Mon, Feb 23, 2026 at 7:12 PM Chris Egerton < fearthecellos@gmail.com > wrote: > > Congrats Viktor! > > On Mon, Feb 23, 2026, 13:09 Matthias J. Sax < mjsax@apache.org > wrote: > > > Dear all, > > > > The Project Management Committee (PMC) for Apache Kafka is pleased to > > announce Viktor Somogyi-Vass as a new PMC member. > > > > Viktor has been a Kafka committer since December 2022. He has remained > > very active in the community since then, and it's my pleasure to > > announce that he has accepted our invitation to become a member of the > > Kafka PMC. > > > > Congratulation Viktor! > > > > > > Matthias, on behalf of the Apache Kafka PMC > >

Congrats Viktor! On Mon, Feb 23, 2026, 13:09 Matthias J. Sax < mjsax@apache.org > wrote: > Dear all, > > The Project Management Committee (PMC) for Apache Kafka is pleased to > announce Viktor Somogyi-Vass as a new PMC member. > > Viktor has been a Kafka committer since December 2022. He has remained > very active in the community since then, and it's my pleasure to > announce that he has accepted our invitation to become a member of the > Kafka PMC. > > Congratulation Viktor! > > > Matthias, on behalf of the Apache Kafka PMC >

Dear all, The Project Management Committee (PMC) for Apache Kafka is pleased to announce Viktor Somogyi-Vass as a new PMC member. Viktor has been a Kafka committer since December 2022. He has remained very active in the community since then, and it's my pleasure to announce that he has accepted our invitation to become a member of the Kafka PMC. Congratulation Viktor! Matthias, on behalf of the Apache Kafka PMC

Congratulation Kamal !! Thanks and Regards Arpit Goyal 8861094754 On Mon, Feb 23, 2026 at 7:23 PM Boudjelda Mohamed Said < bmscomp@gmail.com > wrote: > Congratulations Kamal !! > > On Mon, Feb 23, 2026 at 2:14 PM Satish Duggana < satish.duggana@gmail.com > > wrote: > > > Congratulations Kamal, well deserved!! > > > > ~Satish. > > > > On Sun, 22 Feb 2026 at 23:07, Matthias J. Sax < mjsax@apache.org > wrote: > > > > > Dear all, > > > > > > The Project Management Committee (PMC) for Apache Kafka is pleased to > > > announce Kamal Chandraprakash as a new PMC member. > > > > > > Kamal has been a Kafka committer since September 2024. He has remained > > > very active in the community since then, and it's my pleasure to > > > announce that he has accepted our invitation to become a member of the > > > Kafka PMC...

Congratulations Kamal !! On Mon, Feb 23, 2026 at 2:14 PM Satish Duggana < satish.duggana@gmail.com > wrote: > Congratulations Kamal, well deserved!! > > ~Satish. > > On Sun, 22 Feb 2026 at 23:07, Matthias J. Sax < mjsax@apache.org > wrote: > > > Dear all, > > > > The Project Management Committee (PMC) for Apache Kafka is pleased to > > announce Kamal Chandraprakash as a new PMC member. > > > > Kamal has been a Kafka committer since September 2024. He has remained > > very active in the community since then, and it's my pleasure to > > announce that he has accepted our invitation to become a member of the > > Kafka PMC. > > > > Congratulation Kamal! > > > > > > Matthias, on behalf of the Apache Kafka PMC > > >

Congratulations Lianet!! On Sun, 22 Feb 2026 at 04:22, Matthias J. Sax < mjsax@apache.org > wrote: > Dear all, > > The Project Management Committee (PMC) for Apache Kafka is pleased to > announce Lianet Magrans as a new PMC member. > > Lianet has been a Kafka committer since August 2024. She has remained > very active in the community since then, and it's my pleasure to > announce that she has accepted our invitation to become a member of the > Kafka PMC. > > Congratulation Lianet! > > > Matthias, on behalf of the Apache Kafka PMC >

Congratulations Kamal, well deserved!! ~Satish. On Sun, 22 Feb 2026 at 23:07, Matthias J. Sax < mjsax@apache.org > wrote: > Dear all, > > The Project Management Committee (PMC) for Apache Kafka is pleased to > announce Kamal Chandraprakash as a new PMC member. > > Kamal has been a Kafka committer since September 2024. He has remained > very active in the community since then, and it's my pleasure to > announce that he has accepted our invitation to become a member of the > Kafka PMC. > > Congratulation Kamal! > > > Matthias, on behalf of the Apache Kafka PMC >

Hi Avishek, You can also check out the below thread about tiered storage disablement in ZK mode: https://lists.apache.org/thread/yf9t64vvnxlcztzdl1rq1fn130lyfnxs -- Kamal On Wed, Feb 18, 2026 at 7:07 PM Josep Prat via users < users@kafka.apache.org > wrote: > Hi Avishek, > > Unfortunately, disabling tiered storage only works under KRaft mode. > If you look closely at the KIP-950[1], you'll see this sentence (see the > underlined section): > > *Support for Both KRaft and Zookeeper-backed Clusters*: The tiered > storage disablement feature should be designed and implemented to support > both KRaft and Zookeeper-backed Kafka clusters, ensuring compatibility > across different cluster configurations. Updated: *We will implement for > KRaft only in v3.9.0.* > > I agree that the KIP itself seems to state that it will work with both. But > in the end it was only implemented in KRaft mode. Also, one can see ...

Congrats Andrew, well deserved! On Mon, Feb 23, 2026 at 2:18 AM PoAn Yang < yangpoan@gmail.com > wrote: > Congratulations, Andrew! > > > On Feb 23, 2026, at 9:27 AM, jian fu < fujian1115@gmail.com > wrote: > > > > Hi Andrew: > > Congratulations! > > > > Matthias J. Sax < mjsax@apache.org >于2026年2月23日 周一08:14写道： > > > >> Dear all, > >> > >> The Project Management Committee (PMC) for Apache Kafka is pleased to > >> announce Andrew Schofield as a new PMC member. > >> > >> Andrew has been a Kafka committer since November 2024. He has remained > >> very active in the community since then, and it's my pleasure to > >> announce that he has accepted our invitation to become a member of the > >> Kafka PMC. > >> > >> Congratulation Andrew! > >> > >> > >> Matthias, on behalf o...

Congrats Andrew! Well deserved. On Mon, Feb 23, 2026 at 2:18 AM PoAn Yang < yangpoan@gmail.com > wrote: > > Congratulations, Andrew! > > > On Feb 23, 2026, at 9:27 AM, jian fu < fujian1115@gmail.com > wrote: > > > > Hi Andrew: > > Congratulations! > > > > Matthias J. Sax < mjsax@apache.org >于2026年2月23日 周一08:14写道： > > > >> Dear all, > >> > >> The Project Management Committee (PMC) for Apache Kafka is pleased to > >> announce Andrew Schofield as a new PMC member. > >> > >> Andrew has been a Kafka committer since November 2024. He has remained > >> very active in the community since then, and it's my pleasure to > >> announce that he has accepted our invitation to become a member of the > >> Kafka PMC. > >> > >> Congratulation Andrew! > >> > >> > >> Matthias, on beha...

Congratulations, Christo! > On Feb 23, 2026, at 9:08 AM, Matthias J. Sax < mjsax@apache.org > wrote: > > Dear all, > > The Project Management Committee (PMC) for Apache Kafka is pleased to announce Christo Lolov as a new PMC member. > > Christo has been a Kafka committer since March 2024. He has remained very active in the community since then, and it's my pleasure to announce that he has accepted our invitation to become a member of the Kafka PMC. > > Congratulation Christo! > > > Matthias, on behalf of the Apache Kafka PMC

Congratulations, Kamal! > On Feb 23, 2026, at 8:29 AM, jian fu < fujian1115@gmail.com > wrote: > > jian fu < fujian1115@gmail.com >于2026年2月23日 周一06:49写道： > >> Hi Kamal: >> >> >> Although I'm just a regular community member (not a committer), I still >> want to express my congratulations. >> >> Thank you for all the thoughtful discussions and insights on the PRs and >> KIPs I've submitted in the past year. >> >> Bill Bejeck < bbejeck@gmail.com > 于2026年2月23日周一 02:05写道： >> >>> Congratulations Kamal! >>> >>> On Sun, Feb 22, 2026 at 12:57 PM Chris Egerton < fearthecellos@gmail.com > >>> wrote: >>> >>>> Congrats Kamal, well-earned! >>>> >>>> On Sun, Feb 22, 2026, 12:42 Chia-Ping Tsai < chia7712@gmail.com > wrote: >>>> >>>>> Way to go,...

Congratulations, Andrew! > On Feb 23, 2026, at 9:27 AM, jian fu < fujian1115@gmail.com > wrote: > > Hi Andrew: > Congratulations! > > Matthias J. Sax < mjsax@apache.org >于2026年2月23日 周一08:14写道： > >> Dear all, >> >> The Project Management Committee (PMC) for Apache Kafka is pleased to >> announce Andrew Schofield as a new PMC member. >> >> Andrew has been a Kafka committer since November 2024. He has remained >> very active in the community since then, and it's my pleasure to >> announce that he has accepted our invitation to become a member of the >> Kafka PMC. >> >> Congratulation Andrew! >> >> >> Matthias, on behalf of the Apache Kafka PMC >>

Hi Andrew: Congratulations! Matthias J. Sax < mjsax@apache.org >于2026年2月23日 周一08:14写道： > Dear all, > > The Project Management Committee (PMC) for Apache Kafka is pleased to > announce Andrew Schofield as a new PMC member. > > Andrew has been a Kafka committer since November 2024. He has remained > very active in the community since then, and it's my pleasure to > announce that he has accepted our invitation to become a member of the > Kafka PMC. > > Congratulation Andrew! > > > Matthias, on behalf of the Apache Kafka PMC >

Unsubscribe David Novogrodsky david.novogrodsky@gmail.com http://www.linkedin.com/in/davidnovogrodsky On Sun, Feb 22, 2026 at 6:14 PM Matthias J. Sax < mjsax@apache.org > wrote: > Dear all, > > The Project Management Committee (PMC) for Apache Kafka is pleased to > announce Andrew Schofield as a new PMC member. > > Andrew has been a Kafka committer since November 2024. He has remained > very active in the community since then, and it's my pleasure to > announce that he has accepted our invitation to become a member of the > Kafka PMC. > > Congratulation Andrew! > > > Matthias, on behalf of the Apache Kafka PMC >

Dear all, The Project Management Committee (PMC) for Apache Kafka is pleased to announce Andrew Schofield as a new PMC member. Andrew has been a Kafka committer since November 2024. He has remained very active in the community since then, and it's my pleasure to announce that he has accepted our invitation to become a member of the Kafka PMC. Congratulation Andrew! Matthias, on behalf of the Apache Kafka PMC

Dear all, The Project Management Committee (PMC) for Apache Kafka is pleased to announce Christo Lolov as a new PMC member. Christo has been a Kafka committer since March 2024. He has remained very active in the community since then, and it's my pleasure to announce that he has accepted our invitation to become a member of the Kafka PMC. Congratulation Christo! Matthias, on behalf of the Apache Kafka PMC

jian fu < fujian1115@gmail.com >于2026年2月23日 周一06:49写道： > Hi Kamal: > > > Although I'm just a regular community member (not a committer), I still > want to express my congratulations. > > Thank you for all the thoughtful discussions and insights on the PRs and > KIPs I've submitted in the past year. > > Bill Bejeck < bbejeck@gmail.com > 于2026年2月23日周一 02:05写道： > >> Congratulations Kamal! >> >> On Sun, Feb 22, 2026 at 12:57 PM Chris Egerton < fearthecellos@gmail.com > >> wrote: >> >> > Congrats Kamal, well-earned! >> > >> > On Sun, Feb 22, 2026, 12:42 Chia-Ping Tsai < chia7712@gmail.com > wrote: >> > >> > > Way to go, Kamal! >> > > >> > > Matthias J. Sax < mjsax@apache.org > 於 2026年2月23日週一 上午1:37寫道： >> > > >> > > > Dear all, >> > > > >> > ...

Hi Kamal: Although I'm just a regular community member (not a committer), I still want to express my congratulations. Thank you for all the thoughtful discussions and insights on the PRs and KIPs I've submitted in the past year. Bill Bejeck < bbejeck@gmail.com > 于2026年2月23日周一 02:05写道： > Congratulations Kamal! > > On Sun, Feb 22, 2026 at 12:57 PM Chris Egerton < fearthecellos@gmail.com > > wrote: > > > Congrats Kamal, well-earned! > > > > On Sun, Feb 22, 2026, 12:42 Chia-Ping Tsai < chia7712@gmail.com > wrote: > > > > > Way to go, Kamal! > > > > > > Matthias J. Sax < mjsax@apache.org > 於 2026年2月23日週一 上午1:37寫道： > > > > > > > Dear all, > > > > > > > > The Project Management Committee (PMC) for Apache Kafka is pleased to > > > > announce Kamal Chandraprakash as a new PMC member. > > > > > ...

Congratulations Kamal! On Sun, Feb 22, 2026 at 12:57 PM Chris Egerton < fearthecellos@gmail.com > wrote: > Congrats Kamal, well-earned! > > On Sun, Feb 22, 2026, 12:42 Chia-Ping Tsai < chia7712@gmail.com > wrote: > > > Way to go, Kamal! > > > > Matthias J. Sax < mjsax@apache.org > 於 2026年2月23日週一 上午1:37寫道： > > > > > Dear all, > > > > > > The Project Management Committee (PMC) for Apache Kafka is pleased to > > > announce Kamal Chandraprakash as a new PMC member. > > > > > > Kamal has been a Kafka committer since September 2024. He has remained > > > very active in the community since then, and it's my pleasure to > > > announce that he has accepted our invitation to become a member of the > > > Kafka PMC. > > > > > > Congratulation Kamal! > > > > > > > > > Matthias, on behalf of...

Congrats Kamal, well-earned! On Sun, Feb 22, 2026, 12:42 Chia-Ping Tsai < chia7712@gmail.com > wrote: > Way to go, Kamal! > > Matthias J. Sax < mjsax@apache.org > 於 2026年2月23日週一 上午1:37寫道： > > > Dear all, > > > > The Project Management Committee (PMC) for Apache Kafka is pleased to > > announce Kamal Chandraprakash as a new PMC member. > > > > Kamal has been a Kafka committer since September 2024. He has remained > > very active in the community since then, and it's my pleasure to > > announce that he has accepted our invitation to become a member of the > > Kafka PMC. > > > > Congratulation Kamal! > > > > > > Matthias, on behalf of the Apache Kafka PMC > > >

Way to go, Kamal! Matthias J. Sax < mjsax@apache.org > 於 2026年2月23日週一 上午1:37寫道： > Dear all, > > The Project Management Committee (PMC) for Apache Kafka is pleased to > announce Kamal Chandraprakash as a new PMC member. > > Kamal has been a Kafka committer since September 2024. He has remained > very active in the community since then, and it's my pleasure to > announce that he has accepted our invitation to become a member of the > Kafka PMC. > > Congratulation Kamal! > > > Matthias, on behalf of the Apache Kafka PMC >

Dear all, The Project Management Committee (PMC) for Apache Kafka is pleased to announce Kamal Chandraprakash as a new PMC member. Kamal has been a Kafka committer since September 2024. He has remained very active in the community since then, and it's my pleasure to announce that he has accepted our invitation to become a member of the Kafka PMC. Congratulation Kamal! Matthias, on behalf of the Apache Kafka PMC

The Apache Kafka community is pleased to announce the release for Apache Kafka 3.9.2 This bug-fix release contains several critical fixes and security updates. Notably, this release includes KIP-1252, which addresses inconsistent AlterConfigPolicy behavior between ZooKeeper and KRaft modes. All of the changes in this release can be found in the release notes: https://www.apache.org/dist/kafka/3.9.2/RELEASE_NOTES.html An overview of the release can be found in our announcement blog post: https://kafka.apache.org/blog You can download the source and binary release (Scala 2.13) from: https://kafka.apache.org/community/downloads/#392 --------------------------------------------------------------------------------------------------- Apache Kafka is a distributed streaming platform with four core APIs: ** The Producer API allows an application to publish a stream of records to one or more Kafka topics. ** The Consumer API allows an application to subscribe...

Congratulations Lianet! On Sat, Feb 21, 2026, at 2:50 PM, Matthias J. Sax wrote: > Dear all, > > The Project Management Committee (PMC) for Apache Kafka is pleased to > announce Lianet Magrans as a new PMC member. > > Lianet has been a Kafka committer since August 2024. She has remained > very active in the community since then, and it's my pleasure to > announce that she has accepted our invitation to become a member of the > Kafka PMC. > > Congratulation Lianet! > > > Matthias, on behalf of the Apache Kafka PMC >

Congratulations Lianet!!! > Boudjelda Mohamed Said < bmscomp@gmail.com > 於 2026年2月22日 清晨7:29 寫道： > > Congratulations Lianet!

Congratulations Lianet! On Sun 22 Feb 2026 at 00:08, Bill Bejeck < bbejeck@gmail.com > wrote: > Congratulations Lianet! Well deserved. > > On Sat, Feb 21, 2026 at 5:52 PM Matthias J. Sax < mjsax@apache.org > wrote: > > > Dear all, > > > > The Project Management Committee (PMC) for Apache Kafka is pleased to > > announce Lianet Magrans as a new PMC member. > > > > Lianet has been a Kafka committer since August 2024. She has remained > > very active in the community since then, and it's my pleasure to > > announce that she has accepted our invitation to become a member of the > > Kafka PMC. > > > > Congratulation Lianet! > > > > > > Matthias, on behalf of the Apache Kafka PMC > > >

Congratulations Lianet! Well deserved. On Sat, Feb 21, 2026 at 5:52 PM Matthias J. Sax < mjsax@apache.org > wrote: > Dear all, > > The Project Management Committee (PMC) for Apache Kafka is pleased to > announce Lianet Magrans as a new PMC member. > > Lianet has been a Kafka committer since August 2024. She has remained > very active in the community since then, and it's my pleasure to > announce that she has accepted our invitation to become a member of the > Kafka PMC. > > Congratulation Lianet! > > > Matthias, on behalf of the Apache Kafka PMC >

Dear all, The Project Management Committee (PMC) for Apache Kafka is pleased to announce Lianet Magrans as a new PMC member. Lianet has been a Kafka committer since August 2024. She has remained very active in the community since then, and it's my pleasure to announce that she has accepted our invitation to become a member of the Kafka PMC. Congratulation Lianet! Matthias, on behalf of the Apache Kafka PMC

Hi Avishek Das： To be honest, I don't currently have an environment to monitor the log to know the details logic for upload. Based on my code review, it appears that the task was created in my case. The similarities between my case and yours are: 1. Not all servers are affected. 2. The issue occurred after a restart. You could try the following method to see if it resolves the issue: 1. Upgrade Kafka to 4.2.0, which was just released this week. 2. If you don't want to upgrade kafka. Increase remote.log.metadata.initialization.retry.max.timeout.ms from 2 minutes to a larger value, such as 20 minutes and do restart. Maybe we can also wait whether other guys can have some other feedbacks for your issue. Thanks Regards Jian Avishek Das via users < users@kafka.apache.org > 于2026年2月18日周三 21:27写道： > Hello Jian, > > Thanks for sharing the references. > > I just wanted to confirm, did you encounter the same issue where the ...

Ok. Thanks for the clarification. On Thu, Feb 19, 2026 at 8:04 PM Chia-Ping Tsai < chia7712@gmail.com > wrote: > Hi Subra, > > It seems to me both use an async approach. The root cause is that the > returned error code is different. Please check > https://issues.apache.org/jira/browse/KAFKA-20089 for more details. > > Thanks, > Chia-Ping > > Subra I < iamsubra100@gmail.com > 於 2026年2月19日週四 下午9:58寫道： > > > Thanks for the response Lianet. > > > > This problem happens only in kraft mode brokers. Works fine if we use > kafka > > broker in non-kraft mode. (WIth zookeeper) > > > > From what I understand: (I may be wrong. this is what I read online) > > > > In zookeeper mode, on getting a partitionsFor request, the broker > creates a > > topic if not present and then immediately returns the number of > partitions. > > All this happens synchronously. ...

Hi Subra, It seems to me both use an async approach. The root cause is that the returned error code is different. Please check https://issues.apache.org/jira/browse/KAFKA-20089 for more details. Thanks, Chia-Ping Subra I < iamsubra100@gmail.com > 於 2026年2月19日週四 下午9:58寫道： > Thanks for the response Lianet. > > This problem happens only in kraft mode brokers. Works fine if we use kafka > broker in non-kraft mode. (WIth zookeeper) > > From what I understand: (I may be wrong. this is what I read online) > > In zookeeper mode, on getting a partitionsFor request, the broker creates a > topic if not present and then immediately returns the number of partitions. > All this happens synchronously. > > In kraft mode, the broker creates a topic asynchronously. So, unless u > retry, you wont get the total number of partitions. > > Like I said, this is what I read. > > On Tue, Feb 17, 2026 at 3:19 AM Lianet Magra...

Thanks for the response Lianet. This problem happens only in kraft mode brokers. Works fine if we use kafka broker in non-kraft mode. (WIth zookeeper) From what I understand: (I may be wrong. this is what I read online) In zookeeper mode, on getting a partitionsFor request, the broker creates a topic if not present and then immediately returns the number of partitions. All this happens synchronously. In kraft mode, the broker creates a topic asynchronously. So, unless u retry, you wont get the total number of partitions. Like I said, this is what I read. On Tue, Feb 17, 2026 at 3:19 AM Lianet Magrans < lianetm@apache.org > wrote: > Hi Anand, > > The partitionsFor API does not guarantee that a single call will return the > data if the topic does not exist. It issues a first metadata request to > create the topic, and waits for the api timeout for a response (timeout > param or default.api.timeout.ms config). Then returns whatever it...

Hi Avishek, Unfortunately, disabling tiered storage only works under KRaft mode. If you look closely at the KIP-950[1], you'll see this sentence (see the underlined section): > *Support for Both KRaft and Zookeeper-backed Clusters*: The tiered storage disablement feature should be designed and implemented to support both KRaft and Zookeeper-backed Kafka clusters, ensuring compatibility across different cluster configurations. Updated: *We will implement for KRaft only in v3.9.0.* I agree that the KIP itself seems to state that it will work with both. But in the end it was only implemented in KRaft mode. Also, one can see in the documentation PR[2] that it only mentions how to disable it in KRaft mode. Sorry this is not the answer you were looking for. [1]: https://cwiki.apache.org/confluence/display/KAFKA/KIP-950%3A++Tiered+Storage+Disablement [2]: https://github.com/apache/kafka/pull/16836/changes On Wed, Feb 18, 2026 at 1:53 PM Avishek Das via users...

Hello Jian, Thanks for sharing the references. I just wanted to confirm, did you encounter the same issue where the RLMCopyTask was created but did not copy segments to remote storage, or was the RLMCopyTask not created at all in your case? On Tue, Feb 17, 2026 at 8:48 AM jian fu < fujian1115@gmail.com > wrote: > Hi Avishek Das: > > Though I am not sure about your issue. but I encounter the similar issue > and fix it with: > > https://github.com/apache/kafka/pull/20007 > https://github.com/apache/kafka/pull/20203 > https://cwiki.apache.org/confluence/x/Hg9JFg > > You can refer to it to see if it is the same issue. thanks > > Regards > Jian > > Avishek Das via users < users@kafka.apache.org > 于2026年2月16日周一 21:32写道： > > > Hello Team, > > > > During tiered storage performance testing on Kafka 3.9.1, we observed > cases > > where a broker did not trigger scheduled RL...

Hello Community, As part of our testing, I am validating the scenario where tiered storage is disabled on a topic where it was previously enabled. I attempted to alter the topic configuration using the following configs: remote.storage.enable=true remote.log.copy.disable=true However, this results in an exception stating that remote.log.copy.disable is not valid in ZooKeeper mode. Caused by: org.apache.kafka.common.errors.InvalidConfigurationException: It is invalid to set `remote.log.delete.on.disable` or `remote.log.copy.disable` under Zookeeper's mode. We are running Kafka v3.9.1 on a ZooKeeper-backed cluster, and based on the KIP-950 < https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=263424654#KIP950:TieredStorageDisablement-StateTransitions > documentation, these configurations appear to be available for ZooKeeper-based clusters as well. Am I missing any prerequisite or additional step required to disable Tiered Storage ...

The Apache Kafka community is pleased to announce the release for 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 share coordinators, soft and strict enforcements of quantity of fetched records, 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 pr...

Hi Avishek Das: Though I am not sure about your issue. but I encounter the similar issue and fix it with: https://github.com/apache/kafka/pull/20007 https://github.com/apache/kafka/pull/20203 https://cwiki.apache.org/confluence/x/Hg9JFg You can refer to it to see if it is the same issue. thanks Regards Jian Avishek Das via users < users@kafka.apache.org > 于2026年2月16日周一 21:32写道： > Hello Team, > > During tiered storage performance testing on Kafka 3.9.1, we observed cases > where a broker did not trigger scheduled RLMCopy tasks, resulting in no > segment uploads to remote storage. Scenarios observed: > > - During a rolling restart while tiered storage was actively copying > segments, one broker (out of six) stopped copying segments after > restart. > > - After multiple rolling restarts before enabling tiered storage at > topic level, enabling tiered storage again caused one broker (out of > six...

Hi Anand, The partitionsFor API does not guarantee that a single call will return the data if the topic does not exist. It issues a first metadata request to create the topic, and waits for the api timeout for a response (timeout param or default.api.timeout.ms config). Then returns whatever it gets from the broker in that single call (empty if the topic is not found within the timeout, described in the java docs https://github.com/apache/kafka/blob/e678b4bb7ca99c7d1be0d554ffe7e66f584771d6/clients/src/main/java/org/apache/kafka/clients/consumer/KafkaConsumer.java#L1415 ). Also there are old integration tests with the pattern you describe: a first call to ensure topic is created, then a following one expected to retrieve the partitions for the topic (e.g, in 3.9 branch https://github.com/apache/kafka/blob/5e9866f43ab8e7e41ef39e5584ac50019381328d/core/src/test/scala/integration/kafka/api/PlaintextConsumerTest.scala#L176 ) That being said, I wonder if the difference you...

Hello Team, During tiered storage performance testing on Kafka 3.9.1, we observed cases where a broker did not trigger scheduled RLMCopy tasks, resulting in no segment uploads to remote storage. Scenarios observed: - During a rolling restart while tiered storage was actively copying segments, one broker (out of six) stopped copying segments after restart. - After multiple rolling restarts before enabling tiered storage at topic level, enabling tiered storage again caused one broker (out of six) to stop copying segments. In both cases, restarting the affected broker resolved the issue and copying resumed. DEBUG logging showed that RLMCopy tasks were created for leader partitions, traffic was active, and rolled segments were available. However, no debug logs appeared from the actual copy path < https://github.com/apache/kafka/blob/3.9/core/src/main/java/kafka/log/remote/RemoteLogManager.java#L839 >, suggesting the copy workflow was not being tri...

Hello Team, Can you please confirm this pattern, that when we get any vulnerability of jetty and fix from Jetty is available, how soon Kafka release a new version with this Jetty? Regards, Apoorva Maheshwari From: Apoorva Maheshwari Sent: 13 February 2026 11:10 To: ' users-subscribe@kafka.apache.org ' < users-subscribe@kafka.apache.org >; ' users@kafka.apache.org ' < users@kafka.apache.org > Cc: Abhishek Kant Rattan < abhishek.kant.rattan@ericsson.com >; Sahil Sharma D < sahil.d.sharma@ericsson.com > Subject: RE: Version info that supports Jetty v12.0.25 Response awaited. Regards, Apoorva Maheshwari From: Apoorva Maheshwari Sent: 11 February 2026 10:30 To: users-subscribe@kafka.apache.org <mailto: users-subscribe@kafka.apache.org >; users@kafka.apache.org <mailto: users@kafka.apache.org > Cc: Abhishek Kant Rattan < abhishek.kant.rattan@ericsson.com <mailto: abhishek.kant.rattan@ericsson.com >>; S...

I had responded, and please check https://issues.apache.org/jira/browse/KAFKA-20168 On 2026/02/13 05:39:51 Apoorva Maheshwari via users wrote: > Response awaited. > > Regards, > Apoorva Maheshwari > > From: Apoorva Maheshwari > Sent: 11 February 2026 10:30 > To: users-subscribe@kafka.apache.org ; users@kafka.apache.org > Cc: Abhishek Kant Rattan < abhishek.kant.rattan@ericsson.com >; Sahil Sharma D < sahil.d.sharma@ericsson.com > > Subject: Version info that supports Jetty v12.0.25 > > Hello Team, > > Please confirm your plan to release a version that supports Jetty v12.0.25, in order to address Jetty CVE-2025-5115. > > Regards, > Apoorva Maheshwari > > >

Response awaited. Regards, Apoorva Maheshwari From: Apoorva Maheshwari Sent: 11 February 2026 10:30 To: users-subscribe@kafka.apache.org ; users@kafka.apache.org Cc: Abhishek Kant Rattan < abhishek.kant.rattan@ericsson.com >; Sahil Sharma D < sahil.d.sharma@ericsson.com > Subject: Version info that supports Jetty v12.0.25 Hello Team, Please confirm your plan to release a version that supports Jetty v12.0.25, in order to address Jetty CVE-2025-5115. Regards, Apoorva Maheshwari

Hi, I have run our Strimzi test container tests on AArch64, along with unit and integration tests, and verified the checksums. Everything seems to work without any issues. +1 (non-binding). Cheers, Maros

Thanks Sean, I really enjoyed this track last year. I've been thinking about the idea of "streaming AI" for a while now and have a "thought experiment" on using GenAI for Kafka content based delivery here: https://www.linkedin.com/pulse/can-llms-work-streaming-data-paul-brebner-yiflc/ I've also wondered about using Kafka for the a2a protocol? Any thoughts from anyone else on potential use cases for Kafka + GenAI? Regards, Paul From: Finan, Sean via users < users@kafka.apache.org > Date: Thursday, 12 February 2026 at 5:34 am To: user@ctakes.apache.org < user@ctakes.apache.org >, dev@ctakes.apache.org < dev@ctakes.apache.org >, users@uima.apache.org < users@uima.apache.org >, dev@uima.apache.org < dev@uima.apache.org >, user@flink.apache.org < user@flink.apache.org >, dev@flink.apache.org < dev@flink.apache.org >, users@kafka.apache.org < users@kafka.apache.org >, dev@kafka.apache.org < dev...

Hello, The Call For Papers is now open for the Apache Software Foundation's Community Over Code conference this October in Glasgow. There is a track on "AI Plumbing" at the conference that may be of interest to recipients of this email. Though it doesn't need to be the plumbing focus, I think that a lot can be said about agentic AI. Agentic AI has gotten a lot of buzz in the AI world, and one of the most important things in making agents useful is throwing them together with some good plumbing, e.g. linear or graph-based workflows, orchestration tactics, -communication- protocols, memory, knowledge graphs, etc. There is a lot to talk about. This track might be a perfect place to present efforts in the area, display some work, and perhaps hold a general discussion on experience. Again, Agentic AI is not the focus. Anything regarding putting together any type of AI workflows will be considered relevant. Please forward this email to anybody you know th...

Hello, Thanks Paolo for running Strimzi's tests! As promised the system test results for RC4 can be found at https://drive.google.com/drive/folders/1mFO6S1EvwMeTrM8w-ePTiRj6ko97Sv3A The two consistently failing tests in my environment are: * 'tests/kafkatest/tests/core/network_degrade_test.py::NetworkDegradeTest.test_rate@ {"task_name":"rate-1000-latency-50","device_name":"eth0","latency_ms":50,"rate_limit_kbit":1000000,"metadata_quorum":"COMBINED_KRAFT"}' * tests/kafkatest/tests/tools/replica_verification_test.py::ReplicaVerificationToolTest.test_replica_lags@ {"metadata_quorum":"ISOLATED_KRAFT"} Best, Christo On Wed, 11 Feb 2026 at 10:53, Paolo Patierno < paolo.patierno@gmail.com > wrote: > Hi, > I downloaded the binaries and check the signature. > I also ran all tests within the Strimzi project (Apache Kafka on > Kubernetes) ...