Hello All,

We have a codebase on Java where we create a kafka producer/consumer to
talk to kafka brokers. We support TCP/SSL/SASL modes of operation for kafka.

We are upgrading our environment to JDK 24. And I see that is causing our
SASL functionalities to break.

I am using kafka client version 3.9.0. How do we support SASL with JDK 24
and above? Can I use kafka 4.0.0 client? Even with that, this
functionality is not working.

Please advise.
Thanks,
Subra

On Wed, Apr 2, 2025 at 11:53 AM Jan Vissers <visser...@gmail.com> wrote:

> Hi,
>
> Keeping our fingers crossed for this backport to make it into 3.9.
>
> We are using Kafka client as a 3rd, and 4th party dependency (through
> Confluent Parallel Consumer - @astubbs), in a collection of Helidon MP
> 4.1.6 microservices.
>
> When do you estimate would we know for sure whether it will be in?
>
> Thanks.
> - Jan.
>
>
> On 2025/03/17 17:14:21 Stig Rohde Døssing wrote:
> > Thanks Ismail,
> >
> > I've opened https://github.com/apache/kafka/pull/19221 just to get any
> test
> > failures out of the way in case it is decided to do this backport.
> >
> > I'm hoping people will weigh in with their concerns in this thread if
> they
> > don't like the idea of backporting this change.
> >
> > Den man. 17. mar. 2025 kl. 16.43 skrev Ismael Juma <me...@ismaeljuma.com
> >:
> >
> > > Hi Stig,
> > >
> > > Kafka 4.0 is likely to be released in a day or two. Even so, I think it
> > > makes sense to revive the backporting thread given the lack of
> workaround
> > > for Java 24.
> > >
> > > Ismael
> > >
> > > On Mon, Mar 17, 2025 at 7:44 AM Stig Rohde Døssing <
> stigdoess...@gmail.com
> > > >
> > > wrote:
> > >
> > > > Hi,
> > > >
> > > > Some months ago, a reflective shim was added in
> > > > https://issues.apache.org/jira/browse/KAFKA-17078, in order to
> support
> > > > running Kafka with SASL on JDKs that no longer support the security
> > > > manager.
> > > >
> > > > This shim was added only to Kafka 4.0, but backporting was discussed
> in
> > > > https://lists.apache.org/thread/vl43q9wqq4xs67xx61f0t0850y2b037o.
> There
> > > > was
> > > > no clear consensus for or against backporting, but it ended up not
> > > > happening. At the time, users could work around the issue by enabling
> the
> > > > Security Manager again via a command-line flag.
> > > >
> > > > Java 24, which is planned to release tomorrow, no longer has this
> > > > workaround available.
> > > >
> > > > This leaves users running Java 23 (I am one) in a slightly
> uncomfortable
> > > > spot.
> > > >
> > > > If Kafka releases 4.0 in the next month, we can rush to upgrade to
> that,
> > > > and hope that the first release has no regressions.
> > > >
> > > > Otherwise, we will need to downgrade back to Java 21, since staying
> on 23
> > > > isn't a good idea past Oracle's quarterly security update in April
> (see
> > > > https://www.oracle.com/security-alerts/), which will include patches
> > > that
> > > > won't be released for Java 23.
> > > >
> > > > Would there be strong objections to attempting a backport of this
> shim
> > > to a
> > > > 3.9.x release?
> > > >
> > >
> >
>

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