Re: [VOTE] 4.0.0 RC3

Bruno Cadonna Wed, 12 Mar 2025 18:32:40 -0700

Hi David,

I did the following:


- checked the signatures and checksums of all the release artifacts

- built from the source artifacts and ran into the same issue Lianetdescribed. After that I built from source using the 4.0.0-rc3 tag.

- ran unit and integration tests

- ran through the Kafka quickstart with kafka and kafka-native dockerimages as well as with broker started from downloaded archive- ran through Streams quickstart with kafka and kafka-native dockerimages as well as with broker started from downloaded archive


All good, except:

- the issue building from the source artifact)!

- there are some linking issue in the docs as mentioned in my previouse-mail


Overall, +1 (binding)

Best,
Bruno


On 12.03.25 21:14, Bruno Cadonna wrote:

Hi David,

I ran into the same issues as Lianet regading the quickstart. I believethere is a linking issue.


If I go to

https://kafka.apache.org/40/documentation.html

and then I click on "get started" -> "quickstart" I end up at the 3.9version. The 4.0 version can be found under


https://kafka.apache.org/40/documentation/#quickstart

Best,
Bruno

On 12.03.25 20:30, David Jacot wrote:

Hi Lianet,

Thanks!

Let’s file a Jira for that test. This is not a blocker but we shouldfix it.


Regarding the quick start, are you sure that you used the staged
documentation for 4.0? Here:
https://kafka.apache.org/40/documentation.html

Best,
David

Le mer. 12 mars 2025 à 20:07, Lianet M. <liane...@gmail.com> a écrit :

Hi David,

I've tested the RC3 and this is what I've done so far and what I'vefound:


- build from src kafka-4.0.0-src.tgz with Java 17
- run unit test and integration tests
- run client examples from the examples module (consume/produce/tx)

- build clients with Java 11. Run client unit tests, integrationtests, and

examples as above
- Followed the quickstart guide to start a broker
- Played with command line tools to consume, produce, manage topics
- Tried out the new regex validator tool

All good with the above steps, with these findings:

- When running unit and integration tests on the downloaded
kafka-4.0.0-src.tgz, I got some failures that recovered as TengYao
mentioned, but I noticed a persistent failure locally, in

MetadataSchemaCheckerToolTest.testVerifyEvolutionGit. This test wasadded

in 4.0, and requires a git repo setup, so fails with:
*java.lang.RuntimeException:
Invalid directory, need to be within a Git repository*. This means that

building and running the tests straight from a downloaded kafka srcfolder

doesn't work anymore. It used to work with previous versions (ie. 3.9, I
checked again just in case), because this test didn't exist. If this was

intentional I would expect we need to explain it somewhere, but can'tfind

anything about it. Am I missing something?

- The quickstart https://kafka.apache.org/quickstart still hassections to

start/stop Zookeeper (same for Streams Quickstart).
- Also the quickstart has invalid commands to format log directories and
start the server (pointing to wrong server.properties location under
/kraft). It's OK on the README.

Best,
Lianet

On Wed, Mar 12, 2025 at 10:41 AM David Jacot <david.ja...@gmail.com>
wrote:

Hi all,

All the documentation blockers are now closed. Let's continue the
validation process. I don't expect to cut a new RC unless we find a
non-documentation blocker.

Best,
David

On Wed, Mar 12, 2025 at 3:37 PM David Jacot <david.ja...@gmail.com>

wrote:


Awesome, thanks! I just merged it.

Best,
David

On Wed, Mar 12, 2025 at 3:33 PM 黃竣陽 <s7133...@gmail.com> wrote:


Hello David,

FYI, https://github.com/apache/kafka-site/pull/669 this PR resolve

“1.7 Compatibility” section is empty.


Best,
Jiunn-Yang

David Jacot <david.ja...@gmail.com> 於 2025年3月12日晚上10:15 寫道：
Hi all,

FYI - I just updated the documentation. The "1.7 Compatibility"
section is empty. Looking into it.

Best,
David

On Wed, Mar 12, 2025 at 1:51 PM David Jacot

<dja...@confluent.io.invalid> wrote:


Hi,

Thanks for pointing that out. I will update the documentation by

the end of

the day.

Best,
David

On Wed, Mar 12, 2025 at 1:15 PM TengYao Chi <kiting...@gmail.com>

wrote:

Hi Federico

The issue you mentioned has been resolved by
https://github.com/apache/kafka/pull/19146

Best,
TengYao
Federico Valeri <fedeval...@gmail.com> 於 2025年3月12日週三下午7:32寫道：
Hi David, in the doc menu I see the item "1.6 Differences

Between

KRaft mode and ZooKeeper mode", but paragraph 1.6 talks about

Docker.

Is this supposed to be there?

On Wed, Mar 12, 2025 at 10:56 AM Luke Chen <show...@gmail.com>

wrote:


Hi David,

Thanks for the analysis.

* kafkatest.tests.connect.connect_distributed_test - These

tests are

flaky

in our test infrastructure but they pass locally.

If they can be passed locally, it should be fine.

* kafkatest.tests.core.network_degrade_test - This is not a

blocker

as

it

does not test any Kafka bits besides Trogdor.

Hmm... from the test description, it is indeed not related to

kafka

itself.

But since we did huge change in this release, I'd like to be

more

careful.

I'll try to run this test suite in our internal environment

again and

report the results here.

* kafkatest.tests.tools.replica_verification_test - It has

been

failing

for
a while. The tool is deprecated and not really used so I don't

consider

it

as a blocker. However, there is already a PR inflight to

improve

it.


Sounds good to me.


Thanks.
Luke

On Tue, Mar 11, 2025 at 6:16 PM David Jacot

<dja...@confluent.io.invalid


wrote:

Hi Luke,

+1 for backporting https://github.com/apache/kafka/pull/19172


Regarding the system tests, here is my take:
* kafkatest.tests.connect.connect_distributed_test - These

tests are

flaky

in our test infrastructure but they pass locally.
* kafkatest.tests.core.network_degrade_test - This is not a

blocker

as

it

does not test any Kafka bits besides Trogdor.
* kafkatest.tests.tools.replica_verification_test - It has

been

failing for

a while. The tool is deprecated and not really used so I don't

consider it

as a blocker. However, there is already a PR inflight to

improve it.


Overall, system tests look pretty good to me. Do you agree?

Best,
David

On Tue, Mar 11, 2025 at 8:53 AM Luke Chen <show...@gmail.com>

wrote:

Hi David,

I saw there are some failed tests in system test
<

https://confluent-open-source-kafka-branch-builder-system-test-results.s3-us-west-2.amazonaws.com/trunk/2025-03-06--001.ccab7b98-edaa-40c5-b33d-de1650ea767c--1741313025--apache--4.0--43897f84ac/report.html

what does that mean for this RC?
Are they blockers? Should we file JIRA issues to fix them?

Also, I'd like to backport this upgrade doc improvement PR
<https://github.com/apache/kafka/pull/19172>to 4.0 branch if

you

don't

have
objections.

Thanks.
Luke


On Mon, Mar 10, 2025 at 5:52 PM David Jacot

<dja...@confluent.io.invalid


wrote:

Hi Chia-Ping,

Thanks. I will update the documentation soon.

Best,
David

On Sun, Mar 9, 2025 at 2:43 AM Chia-Ping Tsai <

chia7...@apache.org

wrote:

hi David

I have cherry-pick

https://github.com/apache/kafka/pull/19146

to 4.0

to

fix the link of https://kafka.apache.org/40/zk2kraft

Best,
Chia-Ping

On 2025/03/08 10:08:24 David Jacot wrote:

Hello Kafka users, developers and client-developers,

This is the third 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-rc3/RELEASE_NOTES.html


*** Please download, test and vote by Wed, March 12 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-rc3/

* Docker release artifacts to be voted upon:
apache/kafka:4.0.0-rc3
apache/kafka-native:4.0.0-rc3

* 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-rc3/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-rc3

* 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/13730048850

System tests:


* Successful Docker Image Github Actions Pipeline for 4.0

branch:

Docker Build Test Pipeline (JVM):
https://github.com/apache/kafka/actions/runs/13735818889
Docker Build Test Pipeline (Native):
https://github.com/apache/kafka/actions/runs/13735821944

/**************************************

Thanks,
David Jacot

PS: I used RC3 instead of RC2 by mistake.

Re: [VOTE] 4.0.0 RC3

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