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Posted to users@kafka.apache.org by "Ranjan, Ravi via users" <us...@kafka.apache.org> on 2025/11/25 05:15:59 UTC
Trying to gauge the eol for Kafka 3.9.1. Please help.
Hi
Trying to gauge the eol for Kafka 3.9.1. I could figure out dates for Kafka 3.9 https://endoflife.date/apache-kafka but not for 3.9.1 Please help.
Regards
Ravi Ranjan
Senior Manager, Blue Plant Systems Design Architecture | Ciena
Gurgaon, Haryana
Re: Trying to gauge the eol for Kafka 3.9.1. Please help.
Posted by "Matthias J. Sax" <mj...@apache.org>.
I am not familiar with the details. Sorry.
But many people run with KRaft in production for years already, so I
would believe that it's not something to be seriously concerned about.
Also, looking into the Jira ticket, a lot of tasks are already resolved:
- https://issues.apache.org/jira/browse/KAFKA-12466 (only one open
task about "shell tool integration")
- https://issues.apache.org/jira/browse/KAFKA-10310 (22/36 tickets
resolved)
-Matthias
On 3/26/26 3:14 PM, Dima Brodsky via users wrote:
> Hi Matthias,
>
> Question regarding 4.x and controller log compaction / snapshotting
> facilities. As far as I understand KIP-630
> <https://cwiki.apache.org/confluence/display/KAFKA/KIP-630%3A+Kafka+Raft+Snapshot>
> is
> still open and being worked on. There is still no mechanism in kraft kafka
> 4.x to compact and snapshot controller metadata logs. Is there any concern
> that these logs will grow quickly enough in a large, busy, cluster to
> impact disk usage or controller startup times?
>
> Thanks!
> ttyl
> Dima
>
>
> On Thu, Mar 26, 2026 at 1:47 PM Matthias J. Sax <mj...@apache.org> wrote:
>
>> Yes, we recently did 3.9.2 release, because the move to 4.x (which is
>> the first version w/o ZK) is a somewhat larger step for some users.
>>
>> At this point, it's unclear if there will be 3.9.3 release or not. But
>> as more time progresses, and we get new releases 4.3, 4.4 out, the
>> probability for a 3.9.3 release decreases.
>>
>> I would highly encourage users to make the step off 3.x and onto 4.x.
>>
>> HTH,
>> -Matthias
>>
>>
>> On 3/23/26 9:12 AM, Doug Whitfield via users wrote:
>>> I notice 3.9 is still listed as supported at
>> https://kafka.apache.org/community/downloads/
>>>
>>> Do we have any thoughts on whether there will be a 3.9.3?
>>>
>>> From: Matthias J. Sax <mj...@apache.org>
>>> Date: Tuesday, 25 November 2025 at 11:28
>>> To: users@kafka.apache.org <us...@kafka.apache.org>
>>> Subject: Re: Trying to gauge the eol for Kafka 3.9.1. Please help.
>>>
>>> Cf
>>>
>> https://cwiki.apache.org/confluence/display/KAFKA/Time+Based+Release+Plan#TimeBasedReleasePlan-WhatIsOurEOLPolicy
>> ?
>>>
>>> In general, we maintain 3 versions, so with AK 4.2 release, 3.9.x would
>>> actually hit EOL.
>>>
>>> Given that 4.0 is a major change with ZK removal in favor of KRaft, it
>>> will most likely be maintained a little longer though. We are currently
>>> discussing a 3.9.2 bug-fix release.
>>>
>>> But it will depend on overall community demand, if their will be a 3.9.3
>>> bug-fix release or not. In general, I would not expect 3.9.x to be
>>> maintained too much longer, and migrating off ZK, and to upgrade to 4.x
>>> is highly recommended.
>>>
>>>
>>> -Matthias
>>>
>>>
>>> On 11/24/25 9:15 PM, Ranjan, Ravi via users wrote:
>>>> Hi
>>>>
>>>> Trying to gauge the eol for Kafka 3.9.1. I could figure out dates for
>> Kafka 3.9 https://endoflife.date/apache-kafka but not for 3.9.1 Please
>> help.
>>>>
>>>>
>>>> Regards
>>>>
>>>> Ravi Ranjan
>>>>
>>>> Senior Manager, Blue Plant Systems Design Architecture | Ciena
>>>>
>>>> Gurgaon, Haryana
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>> CAUTION: This email originated from outside of the organization. Do not
>> click on links or open attachments unless you recognize the sender and know
>> the content is safe.
>>>
>>>
>>> This e-mail may contain information that is privileged or confidential.
>> If you are not the intended recipient, please delete the e-mail and any
>> attachments and notify us immediately.
>>>
>>>
>>
>>
>
Re: Trying to gauge the eol for Kafka 3.9.1. Please help.
Posted by Dima Brodsky via users <us...@kafka.apache.org>.
Hi Matthias,
Question regarding 4.x and controller log compaction / snapshotting
facilities. As far as I understand KIP-630
<https://cwiki.apache.org/confluence/display/KAFKA/KIP-630%3A+Kafka+Raft+Snapshot>
is
still open and being worked on. There is still no mechanism in kraft kafka
4.x to compact and snapshot controller metadata logs. Is there any concern
that these logs will grow quickly enough in a large, busy, cluster to
impact disk usage or controller startup times?
Thanks!
ttyl
Dima
On Thu, Mar 26, 2026 at 1:47 PM Matthias J. Sax <mj...@apache.org> wrote:
> Yes, we recently did 3.9.2 release, because the move to 4.x (which is
> the first version w/o ZK) is a somewhat larger step for some users.
>
> At this point, it's unclear if there will be 3.9.3 release or not. But
> as more time progresses, and we get new releases 4.3, 4.4 out, the
> probability for a 3.9.3 release decreases.
>
> I would highly encourage users to make the step off 3.x and onto 4.x.
>
> HTH,
> -Matthias
>
>
> On 3/23/26 9:12 AM, Doug Whitfield via users wrote:
> > I notice 3.9 is still listed as supported at
> https://kafka.apache.org/community/downloads/
> >
> > Do we have any thoughts on whether there will be a 3.9.3?
> >
> > From: Matthias J. Sax <mj...@apache.org>
> > Date: Tuesday, 25 November 2025 at 11:28
> > To: users@kafka.apache.org <us...@kafka.apache.org>
> > Subject: Re: Trying to gauge the eol for Kafka 3.9.1. Please help.
> >
> > Cf
> >
> https://cwiki.apache.org/confluence/display/KAFKA/Time+Based+Release+Plan#TimeBasedReleasePlan-WhatIsOurEOLPolicy
> ?
> >
> > In general, we maintain 3 versions, so with AK 4.2 release, 3.9.x would
> > actually hit EOL.
> >
> > Given that 4.0 is a major change with ZK removal in favor of KRaft, it
> > will most likely be maintained a little longer though. We are currently
> > discussing a 3.9.2 bug-fix release.
> >
> > But it will depend on overall community demand, if their will be a 3.9.3
> > bug-fix release or not. In general, I would not expect 3.9.x to be
> > maintained too much longer, and migrating off ZK, and to upgrade to 4.x
> > is highly recommended.
> >
> >
> > -Matthias
> >
> >
> > On 11/24/25 9:15 PM, Ranjan, Ravi via users wrote:
> >> Hi
> >>
> >> Trying to gauge the eol for Kafka 3.9.1. I could figure out dates for
> Kafka 3.9 https://endoflife.date/apache-kafka but not for 3.9.1 Please
> help.
> >>
> >>
> >> Regards
> >>
> >> Ravi Ranjan
> >>
> >> Senior Manager, Blue Plant Systems Design Architecture | Ciena
> >>
> >> Gurgaon, Haryana
> >>
> >>
> >>
> >
> >
> >
> > CAUTION: This email originated from outside of the organization. Do not
> click on links or open attachments unless you recognize the sender and know
> the content is safe.
> >
> >
> > This e-mail may contain information that is privileged or confidential.
> If you are not the intended recipient, please delete the e-mail and any
> attachments and notify us immediately.
> >
> >
>
>
--
dbrodsky@salesforce.com
"The price of reliability is the pursuit of the utmost simplicity.
It is the price which the very rich find most hard to pay." (Sir Antony
Hoare, 1980)
Re: Trying to gauge the eol for Kafka 3.9.1. Please help.
Posted by "Matthias J. Sax" <mj...@apache.org>.
Yes, we recently did 3.9.2 release, because the move to 4.x (which is
the first version w/o ZK) is a somewhat larger step for some users.
At this point, it's unclear if there will be 3.9.3 release or not. But
as more time progresses, and we get new releases 4.3, 4.4 out, the
probability for a 3.9.3 release decreases.
I would highly encourage users to make the step off 3.x and onto 4.x.
HTH,
-Matthias
On 3/23/26 9:12 AM, Doug Whitfield via users wrote:
> I notice 3.9 is still listed as supported at https://kafka.apache.org/community/downloads/
>
> Do we have any thoughts on whether there will be a 3.9.3?
>
> From: Matthias J. Sax <mj...@apache.org>
> Date: Tuesday, 25 November 2025 at 11:28
> To: users@kafka.apache.org <us...@kafka.apache.org>
> Subject: Re: Trying to gauge the eol for Kafka 3.9.1. Please help.
>
> Cf
> https://cwiki.apache.org/confluence/display/KAFKA/Time+Based+Release+Plan#TimeBasedReleasePlan-WhatIsOurEOLPolicy?
>
> In general, we maintain 3 versions, so with AK 4.2 release, 3.9.x would
> actually hit EOL.
>
> Given that 4.0 is a major change with ZK removal in favor of KRaft, it
> will most likely be maintained a little longer though. We are currently
> discussing a 3.9.2 bug-fix release.
>
> But it will depend on overall community demand, if their will be a 3.9.3
> bug-fix release or not. In general, I would not expect 3.9.x to be
> maintained too much longer, and migrating off ZK, and to upgrade to 4.x
> is highly recommended.
>
>
> -Matthias
>
>
> On 11/24/25 9:15 PM, Ranjan, Ravi via users wrote:
>> Hi
>>
>> Trying to gauge the eol for Kafka 3.9.1. I could figure out dates for Kafka 3.9 https://endoflife.date/apache-kafka but not for 3.9.1 Please help.
>>
>>
>> Regards
>>
>> Ravi Ranjan
>>
>> Senior Manager, Blue Plant Systems Design Architecture | Ciena
>>
>> Gurgaon, Haryana
>>
>>
>>
>
>
>
> CAUTION: This email originated from outside of the organization. Do not click on links or open attachments unless you recognize the sender and know the content is safe.
>
>
> This e-mail may contain information that is privileged or confidential. If you are not the intended recipient, please delete the e-mail and any attachments and notify us immediately.
>
>
Re: Trying to gauge the eol for Kafka 3.9.1. Please help.
Posted by Doug Whitfield via users <us...@kafka.apache.org>.
I notice 3.9 is still listed as supported at https://kafka.apache.org/community/downloads/
Do we have any thoughts on whether there will be a 3.9.3?
From: Matthias J. Sax <mj...@apache.org>
Date: Tuesday, 25 November 2025 at 11:28
To: users@kafka.apache.org <us...@kafka.apache.org>
Subject: Re: Trying to gauge the eol for Kafka 3.9.1. Please help.
Cf
https://cwiki.apache.org/confluence/display/KAFKA/Time+Based+Release+Plan#TimeBasedReleasePlan-WhatIsOurEOLPolicy?
In general, we maintain 3 versions, so with AK 4.2 release, 3.9.x would
actually hit EOL.
Given that 4.0 is a major change with ZK removal in favor of KRaft, it
will most likely be maintained a little longer though. We are currently
discussing a 3.9.2 bug-fix release.
But it will depend on overall community demand, if their will be a 3.9.3
bug-fix release or not. In general, I would not expect 3.9.x to be
maintained too much longer, and migrating off ZK, and to upgrade to 4.x
is highly recommended.
-Matthias
On 11/24/25 9:15 PM, Ranjan, Ravi via users wrote:
> Hi
>
> Trying to gauge the eol for Kafka 3.9.1. I could figure out dates for Kafka 3.9 https://endoflife.date/apache-kafka but not for 3.9.1 Please help.
>
>
> Regards
>
> Ravi Ranjan
>
> Senior Manager, Blue Plant Systems Design Architecture | Ciena
>
> Gurgaon, Haryana
>
>
>
CAUTION: This email originated from outside of the organization. Do not click on links or open attachments unless you recognize the sender and know the content is safe.
This e-mail may contain information that is privileged or confidential. If you are not the intended recipient, please delete the e-mail and any attachments and notify us immediately.
Re: Trying to gauge the eol for Kafka 3.9.1. Please help.
Posted by "Matthias J. Sax" <mj...@apache.org>.
Cf
https://cwiki.apache.org/confluence/display/KAFKA/Time+Based+Release+Plan#TimeBasedReleasePlan-WhatIsOurEOLPolicy?
In general, we maintain 3 versions, so with AK 4.2 release, 3.9.x would
actually hit EOL.
Given that 4.0 is a major change with ZK removal in favor of KRaft, it
will most likely be maintained a little longer though. We are currently
discussing a 3.9.2 bug-fix release.
But it will depend on overall community demand, if their will be a 3.9.3
bug-fix release or not. In general, I would not expect 3.9.x to be
maintained too much longer, and migrating off ZK, and to upgrade to 4.x
is highly recommended.
-Matthias
On 11/24/25 9:15 PM, Ranjan, Ravi via users wrote:
> Hi
>
> Trying to gauge the eol for Kafka 3.9.1. I could figure out dates for Kafka 3.9 https://endoflife.date/apache-kafka but not for 3.9.1 Please help.
>
>
> Regards
>
> Ravi Ranjan
>
> Senior Manager, Blue Plant Systems Design Architecture | Ciena
>
> Gurgaon, Haryana
>
>
>