[VOTE] 3.7.2 RC1

[Matthias J. Sax]

Hello Kafka users, developers and client-developers,


This is the second candidate for release of Apache Kafka 3.7.2. This is
a bug-fix release, closing 21 Jira tickets.



Release notes for the 3.7.2 release:
https://dist.apache.org/repos/dist/dev/kafka/3.7.2-rc1/RELEASE_NOTES.html

Please download, test and vote by Tuesday, Dec 10, 9am PST.

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/3.7.2-rc1/


* Docker release artifacts to be voted upon:
https://hub.docker.com/layers/apache/kafka/3.7.2-rc1/images/sha256-e81f67cd3ca9c018d9b6a2d2354dc6067a5a25908c642383c652f0c6b3e8c4a4?context=explore


* 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/3.7.2-rc1/javadoc/


* Tag to be voted upon (off 3.7 branch) is the 3.7.2 tag:
https://github.com/apache/kafka/releases/tag/3.7.2-rc1


* Documentation:
https://kafka.apache.org/37/documentation.html


* Protocol:
https://kafka.apache.org/37/protocol.html


* Successful CI builds for the 3.7 branch:
Unit/integration tests:
https://ci-builds.apache.org/job/Kafka/job/kafka/job/3.7/

Builds are flaky, but considering the last runs combined, each test
passed at least once.

System tests:

https://confluent-open-source-kafka-system-test-results.s3-us-west-2.amazonaws.com/3.7/2024-12-02--001.ce908c58-d9cf-48db-b95f-08ccd8274a3a--1733218470--confluentinc--3.7--89dd7938f3/report.html

https://confluent-open-source-kafka-system-test-results.s3-us-west-2.amazonaws.com/3.7/2024-11-29--001.5041d078-e977-4cf1-8d8d-76f0feea7ee0--1732947843--confluentinc--3.7--89dd7938f3/report.html

One test is flaky, but we got two different runs that make everything
passing.


* Successful Docker Image Github Actions Pipeline for 3.7 branch:

Docker Build Test Pipeline (JVM):
- https://github.com/apache/kafka/actions/runs/12167195510

Build and Push Release Candidate Docker Image Pipeline (JVM):
- https://github.com/apache/kafka/actions/runs/12167268398



Thanks,
-Matthias

[Bill Bejeck]

Matthias,

Thanks for running the release.

I did the following steps:

• Validated the checksums and keys
• Built from source
• Ran all the unit tests
• Spot checked the javadocs
• Spot checked the documentation
• Ran the KRaft quickstart
• Pulled and started the docker image
• Ran the Kafka Streams quickstart

When I looked over the documentation, I noticed the quickstart (main page and Kafka Streams) still reference the previous release 3.7.1, but this isn't enough to block the release, we can do a PR against the kafka-site repo.

+1(binding)

Regards,

Bill

[Matthias J. Sax]

Thanks for taking a look Bill!

Yes, for minor release we stage the new docs in a "hidden" folder (eg
`/40/` for upcoming 4.0.0 release), but we don't do this for bug-fix
releases IIRC -- there is no `/370/` or `/371/` folders. We could create
a `/372/` but would need to delete it afterward. Pushing into `/37/`
folder would overwrite the current `3.7.1` docs so we cannot do this.

Hence, I just skipped pushing the docs to `asf-site` -- I think this is
what we did in the past, too?


-Matthias

On 12/4/24 3:53 PM, Bill Bejeck wrote:
> Matthias,
>
> Thanks for running the release.
>
> I did the following steps:
>

> - Validated the checksums and keys
> - Built from source
> - Ran all the unit tests
> - Spot checked the javadocs
> - Spot checked the documentation
> - Ran the KRaft quickstart
> - Pulled and started the docker image
> - Ran the Kafka Streams quickstart

[Josep Prat]

Hi Matthias,

For 3.8.1 I pointed to the PR that makes the update to the new patch version.

Best,

------------------
Josep Prat
Open Source Engineering Director, Aiven
josep...@aiven.io   |   +491715557497 | aiven.io
Aiven Deutschland GmbH
Alexanderufer 3-7, 10117 Berlin
Geschäftsführer: Oskari Saarenmaa, Hannu Valtonen,
Anna Richardson, Kenneth Chen
Amtsgericht Charlottenburg, HRB 209739 B

[Divij Vaidya]

## Validations (on AArch64 machine)

1. Built from source

2. Ran all tests (successful amongst multiple runs)

3. Verified basic produce/consume

4. Verified that the maven artifacts contain 3.7.2 bits

## Problems

1. While checking the commits on the branch, I found one commit which is not captured in release notes (https://issues.apache.org/jira/browse/KAFKA-17190). I have updated the JIRA with the correct tag now. This does not require a new RC.

2. Do we want to backport changes to 3.7 such as https://issues.apache.org/jira/browse/KAFKA-18051 and https://issues.apache.org/jira/browse/KAFKA-17062? The former is a good-to-have validation and the latter impacts data stored by Tiered Storage which is not GA in 3.7. Hence, we do not need a new RC, but if we do end up creating one for a different reason, let's backport these.

## Vote

+ 1 (binding)

--

Divij Vaidya

[Matthias J. Sax]

Thanks Josep. Great idea.

Here is the draft PR link for docs updates:
https://github.com/apache/kafka-site/pull/652



Thanks Divij for talking a look and voting.

If we need a new RC, happy to include the two tickets you mentioned. Too
bad that you did miss my original email proposing 3.7.2, in which I did
ask people to call out missing fixes for cherry-picking.


-Matthias

[Matthias J. Sax]

Thanks all for verifying the RC and for voting.

I am closing the vote now as accepted. Will send a follow up email with
the result, and move forward with the release.


Also: +1 (binding) from my side


-Matthias

On 12/8/24 2:47 AM, Federico Valeri wrote:
> Hi, thanks for running the release.
>
> - Built from source with JDK 17
> - Ran all unit and integration tests
> - Spot checked documentation and javadoc
> - Ran ZK and KRaft quickstarts
> - Ran Docker image
>
> +1 non binding
>
> Cheers
> Fede
>
> On Sun, Dec 8, 2024 at 8:57 AM TengYao Chi <kiti...@gmail.com> wrote:
>>
>> Hi Matthias,
>>
>> Thanks for running the 3.7.2 release.
>> I did some validation on my local machine:
>>
>> - Built from the source /w JDK21
>> - Ran all tests (including unit test and integration test)
>> - Ran the quickstart separately using both KRaft and ZK modes with
>> kafka_2.13-3.7.2.tgz
>>
>> +1 (non-binding)
>>
>> Best,
>> TengYao
>>
>> 黃竣陽 <s713...@gmail.com> 於 2024年12月7日 週六 下午2:06寫道：
>>
>>> Hi Matthias,

>>>
>>> Thanks for running the release.

>>> I did the following steps,
>>>
>>> - Ran all the unit test and integration test.
>>> - Built from source
>>> - Ran the KRaft quickstart
>>>
>>> +1 (non-binding)
>>>
>>> Thanks,
>>> Jiunn-Yang
>>>
>>>> Andrew Schofield <andrew_sch...@outlook.com> 於 2024年12月6日
>>> 下午5:03 寫道：
>>>>
>>>> Hi Matthias,

>>>> Thanks for running the release.
>>>>

>>>> I did the following:
>>>> - Browsed the javadoc
>>>> - Browsed the protocol documentation
>>>> - Ran the quickstart with ZK
>>>>
>>>> +1 (non-binding)
>>>>
>>>> Thanks,
>>>> Andrew
>>>> ________________________________________
>>>> From: Luke Chen <sho...@gmail.com>
>>>> Sent: 06 December 2024 07:22
>>>> To: d...@kafka.apache.org <d...@kafka.apache.org>
>>>> Cc: us...@kafka.apache.org <us...@kafka.apache.org>; kafka-clients <
>>> kafka-...@googlegroups.com>
>>>> Subject: Re: [VOTE] 3.7.2 RC1
>>>>
>>>> Hi Matthias,

>>>>
>>>> Thanks for running the release.
>>>>
>>>> I did the following steps:
>>>>
>>>> - Validated the checksums and keys

>>>> - Browsed the javadocs
>>>> - Browsed the documentation
>>>> - Ran all the quickstart using KRaft with kafka_2.13-3.7.2.tgz
>>>> - Ran basic quickstart using 3.7.2-rc1 docker image
>>>>
>>>> +1 binding from me.
>>>>
>>>> Thanks.
>>>> Luke
>>>>
>>>> On Fri, Dec 6, 2024 at 12:06 PM Matthias J. Sax