[DISCUSS] Drop Kafka 0.8/0.9

[Chesnay Schepler-3]

Hello,

What's everyone's take on dropping the Kafka 0.8/0.9 connectors from the
Flink codebase?

We haven't touched either of them for the 1.10 release, and it seems
quite unlikely that we will do so in the future.

We could finally close a number of test stability tickets that have been
lingering for quite a while.


Regards,

Chesnay

[Konstantin Knauf-3]

Hi Chesnay,

+1 for dropping. I have not heard from any user using 0.8 or 0.9 for a long
while.

Cheers,

Konstantin

On Wed, Dec 4, 2019 at 1:57 PM Chesnay Schepler <[hidden email]> wrote:

> Hello,
>
> What's everyone's take on dropping the Kafka 0.8/0.9 connectors from the
> Flink codebase?
>
> We haven't touched either of them for the 1.10 release, and it seems
> quite unlikely that we will do so in the future.
>
> We could finally close a number of test stability tickets that have been
> lingering for quite a while.
>
>
> Regards,
>
> Chesnay
>
>

--

Konstantin Knauf | Solutions Architect

[phone]


Follow us @VervericaData Ververica <https://www.ververica.com/>


--

Join Flink Forward <https://flink-forward.org/> - The Apache Flink
Conference

Stream Processing | Event Driven | Real Time

--

Ververica GmbH | Invalidenstrasse 115, 10115 Berlin, Germany

--
Ververica GmbH
Registered at Amtsgericht Charlottenburg: HRB 158244 B
Managing Directors: Timothy Alexander Steinert, Yip Park Tung Jason, Ji
(Tony) Cheng

[Jark Wu-2]

+1 for dropping, also cc'ed user mailing list.


Best,
Jark

On Thu, 5 Dec 2019 at 03:39, Konstantin Knauf <[hidden email]>
wrote:

> Hi Chesnay,
>
> +1 for dropping. I have not heard from any user using 0.8 or 0.9 for a long
> while.
>
> Cheers,
>
> Konstantin
>
> On Wed, Dec 4, 2019 at 1:57 PM Chesnay Schepler <[hidden email]>
> wrote:
>
> > Hello,
> >
> > What's everyone's take on dropping the Kafka 0.8/0.9 connectors from the
> > Flink codebase?
> >
> > We haven't touched either of them for the 1.10 release, and it seems
> > quite unlikely that we will do so in the future.
> >
> > We could finally close a number of test stability tickets that have been
> > lingering for quite a while.
> >
> >
> > Regards,
> >
> > Chesnay
> >
> >
>
> --
>
> Konstantin Knauf | Solutions Architect
>
> [phone]
>
>
> Follow us @VervericaData Ververica <https://www.ververica.com/>
>
>
> --
>
> Join Flink Forward <https://flink-forward.org/> - The Apache Flink
> Conference
>
> Stream Processing | Event Driven | Real Time
>
> --
>
> Ververica GmbH | Invalidenstrasse 115, 10115 Berlin, Germany
>
> --
> Ververica GmbH
> Registered at Amtsgericht Charlottenburg: HRB 158244 B
> Managing Directors: Timothy Alexander Steinert, Yip Park Tung Jason, Ji
> (Tony) Cheng
>

[jincheng sun]

+1  for drop it, and Thanks for bring up this discussion Chesnay!

Best,
Jincheng

Jark Wu <[hidden email]> 于2019年12月5日周四 上午10:19写道：

> +1 for dropping, also cc'ed user mailing list.
>
>
> Best,
> Jark
>
> On Thu, 5 Dec 2019 at 03:39, Konstantin Knauf <[hidden email]>
> wrote:
>
> > Hi Chesnay,
> >
> > +1 for dropping. I have not heard from any user using 0.8 or 0.9 for a
> long
> > while.
> >
> > Cheers,
> >
> > Konstantin
> >
> > On Wed, Dec 4, 2019 at 1:57 PM Chesnay Schepler <[hidden email]>
> > wrote:
> >
> > > Hello,
> > >
> > > What's everyone's take on dropping the Kafka 0.8/0.9 connectors from
> the
> > > Flink codebase?
> > >
> > > We haven't touched either of them for the 1.10 release, and it seems
> > > quite unlikely that we will do so in the future.
> > >
> > > We could finally close a number of test stability tickets that have
> been
> > > lingering for quite a while.
> > >
> > >
> > > Regards,
> > >
> > > Chesnay
> > >
> > >
> >
> > --
> >
> > Konstantin Knauf | Solutions Architect
> >
> > [phone]
> >
> >
> > Follow us @VervericaData Ververica <https://www.ververica.com/>
> >
> >
> > --
> >
> > Join Flink Forward <https://flink-forward.org/> - The Apache Flink
> > Conference
> >
> > Stream Processing | Event Driven | Real Time
> >
> > --
> >
> > Ververica GmbH | Invalidenstrasse 115, 10115 Berlin, Germany
> >
> > --
> > Ververica GmbH
> > Registered at Amtsgericht Charlottenburg: HRB 158244 B
> > Managing Directors: Timothy Alexander Steinert, Yip Park Tung Jason, Ji
> > (Tony) Cheng
> >
>

[vino yang]

+1

jincheng sun <[hidden email]> 于2019年12月5日周四 上午10:26写道：

> +1  for drop it, and Thanks for bring up this discussion Chesnay!
>
> Best,
> Jincheng
>
> Jark Wu <[hidden email]> 于2019年12月5日周四 上午10:19写道：
>
>> +1 for dropping, also cc'ed user mailing list.
>>
>>
>> Best,
>> Jark
>>
>> On Thu, 5 Dec 2019 at 03:39, Konstantin Knauf <[hidden email]>
>> wrote:
>>
>> > Hi Chesnay,
>> >
>> > +1 for dropping. I have not heard from any user using 0.8 or 0.9 for a
>> long
>> > while.
>> >
>> > Cheers,
>> >
>> > Konstantin
>> >
>> > On Wed, Dec 4, 2019 at 1:57 PM Chesnay Schepler <[hidden email]>
>> > wrote:
>> >
>> > > Hello,
>> > >
>> > > What's everyone's take on dropping the Kafka 0.8/0.9 connectors from
>> the
>> > > Flink codebase?
>> > >
>> > > We haven't touched either of them for the 1.10 release, and it seems
>> > > quite unlikely that we will do so in the future.
>> > >
>> > > We could finally close a number of test stability tickets that have
>> been
>> > > lingering for quite a while.
>> > >
>> > >
>> > > Regards,
>> > >
>> > > Chesnay
>> > >
>> > >
>> >
>> > --
>> >
>> > Konstantin Knauf | Solutions Architect
>> >
>> > [phone]
>> >
>> >
>> > Follow us @VervericaData Ververica <https://www.ververica.com/>
>> >
>> >
>> > --
>> >
>> > Join Flink Forward <https://flink-forward.org/> - The Apache Flink
>> > Conference
>> >
>> > Stream Processing | Event Driven | Real Time
>> >
>> > --
>> >
>> > Ververica GmbH | Invalidenstrasse 115, 10115 Berlin, Germany
>> >
>> > --
>> > Ververica GmbH
>> > Registered at Amtsgericht Charlottenburg: HRB 158244 B
>> > Managing Directors: Timothy Alexander Steinert, Yip Park Tung Jason, Ji
>> > (Tony) Cheng
>> >
>>
>

[Dian Fu-2]

+1 for dropping them.

Just FYI: there was a similar discussion few months ago [1].

[1] http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/DISCUSS-Drop-older-versions-of-Kafka-Connectors-0-9-0-10-for-Flink-1-10-td29916.html#a29997 <http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/DISCUSS-Drop-older-versions-of-Kafka-Connectors-0-9-0-10-for-Flink-1-10-td29916.html#a29997>

> 在 2019年12月5日，上午10:29，vino yang <[hidden email]> 写道：
>
> +1
>
> jincheng sun <[hidden email] <mailto:[hidden email]>> 于2019年12月5日周四 上午10:26写道：
> +1  for drop it, and Thanks for bring up this discussion Chesnay!
>
> Best,
> Jincheng
>
> Jark Wu <[hidden email] <mailto:[hidden email]>> 于2019年12月5日周四 上午10:19写道：
> +1 for dropping, also cc'ed user mailing list.
>
>
> Best,
> Jark
>
> On Thu, 5 Dec 2019 at 03:39, Konstantin Knauf <[hidden email] <mailto:[hidden email]>>
> wrote:
>
> > Hi Chesnay,
> >
> > +1 for dropping. I have not heard from any user using 0.8 or 0.9 for a long
> > while.
> >
> > Cheers,
> >
> > Konstantin
> >
> > On Wed, Dec 4, 2019 at 1:57 PM Chesnay Schepler <[hidden email] <mailto:[hidden email]>>
> > wrote:
> >
> > > Hello,
> > >
> > > What's everyone's take on dropping the Kafka 0.8/0.9 connectors from the
> > > Flink codebase?
> > >
> > > We haven't touched either of them for the 1.10 release, and it seems
> > > quite unlikely that we will do so in the future.
> > >
> > > We could finally close a number of test stability tickets that have been
> > > lingering for quite a while.
> > >
> > >
> > > Regards,
> > >
> > > Chesnay
> > >
> > >
> >
> > --
> >
> > Konstantin Knauf | Solutions Architect
> >
> > [phone]
> >
> >
> > Follow us @VervericaData Ververica <https://www.ververica.com/ <https://www.ververica.com/>>
> >
> >
> > --
> >
> > Join Flink Forward <https://flink-forward.org/ <https://flink-forward.org/>> - The Apache Flink
> > Conference
> >
> > Stream Processing | Event Driven | Real Time
> >
> > --
> >
> > Ververica GmbH | Invalidenstrasse 115, 10115 Berlin, Germany
> >
> > --
> > Ververica GmbH
> > Registered at Amtsgericht Charlottenburg: HRB 158244 B
> > Managing Directors: Timothy Alexander Steinert, Yip Park Tung Jason, Ji
> > (Tony) Cheng
> >

[Zhenghua Gao]

+1 for dropping.

*Best Regards,*
*Zhenghua Gao*


On Thu, Dec 5, 2019 at 11:08 AM Dian Fu <[hidden email]> wrote:

> +1 for dropping them.
>
> Just FYI: there was a similar discussion few months ago [1].
>
> [1]
> http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/DISCUSS-Drop-older-versions-of-Kafka-Connectors-0-9-0-10-for-Flink-1-10-td29916.html#a29997
>
> 在 2019年12月5日，上午10:29，vino yang <[hidden email]> 写道：
>
> +1
>
> jincheng sun <[hidden email]> 于2019年12月5日周四 上午10:26写道：
>
>> +1  for drop it, and Thanks for bring up this discussion Chesnay!
>>
>> Best,
>> Jincheng
>>
>> Jark Wu <[hidden email]> 于2019年12月5日周四 上午10:19写道：
>>
>>> +1 for dropping, also cc'ed user mailing list.
>>>
>>>
>>> Best,
>>> Jark
>>>
>>> On Thu, 5 Dec 2019 at 03:39, Konstantin Knauf <[hidden email]>
>>> wrote:
>>>
>>> > Hi Chesnay,
>>> >
>>> > +1 for dropping. I have not heard from any user using 0.8 or 0.9 for a
>>> long
>>> > while.
>>> >
>>> > Cheers,
>>> >
>>> > Konstantin
>>> >
>>> > On Wed, Dec 4, 2019 at 1:57 PM Chesnay Schepler <[hidden email]>
>>> > wrote:
>>> >
>>> > > Hello,
>>> > >
>>> > > What's everyone's take on dropping the Kafka 0.8/0.9 connectors from
>>> the
>>> > > Flink codebase?
>>> > >
>>> > > We haven't touched either of them for the 1.10 release, and it seems
>>> > > quite unlikely that we will do so in the future.
>>> > >
>>> > > We could finally close a number of test stability tickets that have
>>> been
>>> > > lingering for quite a while.
>>> > >
>>> > >
>>> > > Regards,
>>> > >
>>> > > Chesnay
>>> > >
>>> > >
>>> >
>>> > --
>>> >
>>> > Konstantin Knauf | Solutions Architect
>>> >
>>> > [phone]
>>> >
>>> >
>>> > Follow us @VervericaData Ververica <https://www.ververica.com/>
>>> >
>>> >
>>> > --
>>> >
>>> > Join Flink Forward <https://flink-forward.org/> - The Apache Flink
>>> > Conference
>>> >
>>> > Stream Processing | Event Driven | Real Time
>>> >
>>> > --
>>> >
>>> > Ververica GmbH | Invalidenstrasse 115, 10115 Berlin, Germany
>>> >
>>> > --
>>> > Ververica GmbH
>>> > Registered at Amtsgericht Charlottenburg: HRB 158244 B
>>> > Managing Directors: Timothy Alexander Steinert, Yip Park Tung Jason, Ji
>>> > (Tony) Cheng
>>> >
>>>
>>
>

[Benchao Li]

+1 for dropping.

Zhenghua Gao <[hidden email]> 于2019年12月5日周四 下午4:05写道：

> +1 for dropping.
>
> *Best Regards,*
> *Zhenghua Gao*
>
>
> On Thu, Dec 5, 2019 at 11:08 AM Dian Fu <[hidden email]> wrote:
>
> > +1 for dropping them.
> >
> > Just FYI: there was a similar discussion few months ago [1].
> >
> > [1]
> >
> http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/DISCUSS-Drop-older-versions-of-Kafka-Connectors-0-9-0-10-for-Flink-1-10-td29916.html#a29997
> >
> > 在 2019年12月5日，上午10:29，vino yang <[hidden email]> 写道：
> >
> > +1
> >
> > jincheng sun <[hidden email]> 于2019年12月5日周四 上午10:26写道：
> >
> >> +1  for drop it, and Thanks for bring up this discussion Chesnay!
> >>
> >> Best,
> >> Jincheng
> >>
> >> Jark Wu <[hidden email]> 于2019年12月5日周四 上午10:19写道：
> >>
> >>> +1 for dropping, also cc'ed user mailing list.
> >>>
> >>>
> >>> Best,
> >>> Jark
> >>>
> >>> On Thu, 5 Dec 2019 at 03:39, Konstantin Knauf <
> [hidden email]>
> >>> wrote:
> >>>
> >>> > Hi Chesnay,
> >>> >
> >>> > +1 for dropping. I have not heard from any user using 0.8 or 0.9 for
> a
> >>> long
> >>> > while.
> >>> >
> >>> > Cheers,
> >>> >
> >>> > Konstantin
> >>> >
> >>> > On Wed, Dec 4, 2019 at 1:57 PM Chesnay Schepler <[hidden email]>
> >>> > wrote:
> >>> >
> >>> > > Hello,
> >>> > >
> >>> > > What's everyone's take on dropping the Kafka 0.8/0.9 connectors
> from
> >>> the
> >>> > > Flink codebase?
> >>> > >
> >>> > > We haven't touched either of them for the 1.10 release, and it
> seems
> >>> > > quite unlikely that we will do so in the future.
> >>> > >
> >>> > > We could finally close a number of test stability tickets that have
> >>> been
> >>> > > lingering for quite a while.
> >>> > >
> >>> > >
> >>> > > Regards,
> >>> > >
> >>> > > Chesnay
> >>> > >
> >>> > >
> >>> >
> >>> > --
> >>> >
> >>> > Konstantin Knauf | Solutions Architect
> >>> >
> >>> > [phone]
> >>> >
> >>> >
> >>> > Follow us @VervericaData Ververica <https://www.ververica.com/>
> >>> >
> >>> >
> >>> > --
> >>> >
> >>> > Join Flink Forward <https://flink-forward.org/> - The Apache Flink
> >>> > Conference
> >>> >
> >>> > Stream Processing | Event Driven | Real Time
> >>> >
> >>> > --
> >>> >
> >>> > Ververica GmbH | Invalidenstrasse 115, 10115 Berlin, Germany
> >>> >
> >>> > --
> >>> > Ververica GmbH
> >>> > Registered at Amtsgericht Charlottenburg: HRB 158244 B
> >>> > Managing Directors: Timothy Alexander Steinert, Yip Park Tung Jason,
> Ji
> >>> > (Tony) Cheng
> >>> >
> >>>
> >>
> >
>

--

Benchao Li
School of Electronics Engineering and Computer Science, Peking University
Tel:[phone]
Email: [hidden email]; [hidden email]

[Thomas Weise]

+1


On Fri, Dec 6, 2019 at 3:46 AM Benchao Li <[hidden email]> wrote:

> +1 for dropping.
>
> Zhenghua Gao <[hidden email]> 于2019年12月5日周四 下午4:05写道：
>
> > +1 for dropping.
> >
> > *Best Regards,*
> > *Zhenghua Gao*
> >
> >
> > On Thu, Dec 5, 2019 at 11:08 AM Dian Fu <[hidden email]> wrote:
> >
> > > +1 for dropping them.
> > >
> > > Just FYI: there was a similar discussion few months ago [1].
> > >
> > > [1]
> > >
> >
> http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/DISCUSS-Drop-older-versions-of-Kafka-Connectors-0-9-0-10-for-Flink-1-10-td29916.html#a29997
> > >
> > > 在 2019年12月5日，上午10:29，vino yang <[hidden email]> 写道：
> > >
> > > +1
> > >
> > > jincheng sun <[hidden email]> 于2019年12月5日周四 上午10:26写道：
> > >
> > >> +1  for drop it, and Thanks for bring up this discussion Chesnay!
> > >>
> > >> Best,
> > >> Jincheng
> > >>
> > >> Jark Wu <[hidden email]> 于2019年12月5日周四 上午10:19写道：
> > >>
> > >>> +1 for dropping, also cc'ed user mailing list.
> > >>>
> > >>>
> > >>> Best,
> > >>> Jark
> > >>>
> > >>> On Thu, 5 Dec 2019 at 03:39, Konstantin Knauf <
> > [hidden email]>
> > >>> wrote:
> > >>>
> > >>> > Hi Chesnay,
> > >>> >
> > >>> > +1 for dropping. I have not heard from any user using 0.8 or 0.9
> for
> > a
> > >>> long
> > >>> > while.
> > >>> >
> > >>> > Cheers,
> > >>> >
> > >>> > Konstantin
> > >>> >
> > >>> > On Wed, Dec 4, 2019 at 1:57 PM Chesnay Schepler <
> [hidden email]>
> > >>> > wrote:
> > >>> >
> > >>> > > Hello,
> > >>> > >
> > >>> > > What's everyone's take on dropping the Kafka 0.8/0.9 connectors
> > from
> > >>> the
> > >>> > > Flink codebase?
> > >>> > >
> > >>> > > We haven't touched either of them for the 1.10 release, and it
> > seems
> > >>> > > quite unlikely that we will do so in the future.
> > >>> > >
> > >>> > > We could finally close a number of test stability tickets that
> have
> > >>> been
> > >>> > > lingering for quite a while.
> > >>> > >
> > >>> > >
> > >>> > > Regards,
> > >>> > >
> > >>> > > Chesnay
> > >>> > >
> > >>> > >
> > >>> >
> > >>> > --
> > >>> >
> > >>> > Konstantin Knauf | Solutions Architect
> > >>> >
> > >>> > [phone]
> > >>> >
> > >>> >
> > >>> > Follow us @VervericaData Ververica <https://www.ververica.com/>
> > >>> >
> > >>> >
> > >>> > --
> > >>> >
> > >>> > Join Flink Forward <https://flink-forward.org/> - The Apache Flink
> > >>> > Conference
> > >>> >
> > >>> > Stream Processing | Event Driven | Real Time
> > >>> >
> > >>> > --
> > >>> >
> > >>> > Ververica GmbH | Invalidenstrasse 115, 10115 Berlin, Germany
> > >>> >
> > >>> > --
> > >>> > Ververica GmbH
> > >>> > Registered at Amtsgericht Charlottenburg: HRB 158244 B
> > >>> > Managing Directors: Timothy Alexander Steinert, Yip Park Tung
> Jason,
> > Ji
> > >>> > (Tony) Cheng
> > >>> >
> > >>>
> > >>
> > >
> >
>
>
> --
>
> Benchao Li
> School of Electronics Engineering and Computer Science, Peking University
> Tel:[phone]
> Email: [hidden email]; [hidden email]
>

[Becket Qin]

Hi all,

Sorry for being late on this thread. My hunch is that 0.8 and 0.9 is old
enough to deprecate. However, after checking the downloads statistics from
Apache, I am not completely sure anymore.

Here are some Kafka broker jar download stats from the past month according
to Apache Nexus[1]. Since Flink only supports Scala 2.11, I only listed
Scala 2.11 here.

Scala 2.11:
version downloads percentage
0.8.2.1 215478 27.01%
2.0.1 155984 19.55%
1.1.0 85794 10.75%
1.0.1 53745 6.74%
0.9.0.1 39825 4.99%

And out of all Scala versions in the broker downloads, Scala 2.11 accounts
about 75% of the total downloads. From all the numbers I can see, it looks
there are about 1/4 of the users still using Kafka 0.8. I have to admit it
is also quite counter intuitive for me. I am pretty sure that new users are
not going to use Kafka 0.8 anymore, but the existing users are moving
slowly.

However, these stats may not necessarily prevent us from dropping connector
support for Kafka 0.8 and 0.9, if we assume the users are not going to
upgrade their Flink version, which might be the case given they did not
upgrade their Kafka versions for long either.

To avoid surprises, I'd still prefer following the proper deprecation
process. i.e. mark the connectors as deprecated, announce the deprecation
plan in the release note, and remove them 1-2 releases later if we don't
hear complaints from the users.

Thanks,

Jiangjie (Becket) Qin

[1] https://repository.apache.org/#central-stat


On Sat, Dec 7, 2019 at 12:42 AM Thomas Weise <[hidden email]> wrote:

> +1
>
>
> On Fri, Dec 6, 2019 at 3:46 AM Benchao Li <[hidden email]> wrote:
>
> > +1 for dropping.
> >
> > Zhenghua Gao <[hidden email]> 于2019年12月5日周四 下午4:05写道：
> >
> > > +1 for dropping.
> > >
> > > *Best Regards,*
> > > *Zhenghua Gao*
> > >
> > >
> > > On Thu, Dec 5, 2019 at 11:08 AM Dian Fu <[hidden email]> wrote:
> > >
> > > > +1 for dropping them.
> > > >
> > > > Just FYI: there was a similar discussion few months ago [1].
> > > >
> > > > [1]
> > > >
> > >
> >
> http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/DISCUSS-Drop-older-versions-of-Kafka-Connectors-0-9-0-10-for-Flink-1-10-td29916.html#a29997
> > > >
> > > > 在 2019年12月5日，上午10:29，vino yang <[hidden email]> 写道：
> > > >
> > > > +1
> > > >
> > > > jincheng sun <[hidden email]> 于2019年12月5日周四 上午10:26写道：
> > > >
> > > >> +1  for drop it, and Thanks for bring up this discussion Chesnay!
> > > >>
> > > >> Best,
> > > >> Jincheng
> > > >>
> > > >> Jark Wu <[hidden email]> 于2019年12月5日周四 上午10:19写道：
> > > >>
> > > >>> +1 for dropping, also cc'ed user mailing list.
> > > >>>
> > > >>>
> > > >>> Best,
> > > >>> Jark
> > > >>>
> > > >>> On Thu, 5 Dec 2019 at 03:39, Konstantin Knauf <
> > > [hidden email]>
> > > >>> wrote:
> > > >>>
> > > >>> > Hi Chesnay,
> > > >>> >
> > > >>> > +1 for dropping. I have not heard from any user using 0.8 or 0.9
> > for
> > > a
> > > >>> long
> > > >>> > while.
> > > >>> >
> > > >>> > Cheers,
> > > >>> >
> > > >>> > Konstantin
> > > >>> >
> > > >>> > On Wed, Dec 4, 2019 at 1:57 PM Chesnay Schepler <
> > [hidden email]>
> > > >>> > wrote:
> > > >>> >
> > > >>> > > Hello,
> > > >>> > >
> > > >>> > > What's everyone's take on dropping the Kafka 0.8/0.9 connectors
> > > from
> > > >>> the
> > > >>> > > Flink codebase?
> > > >>> > >
> > > >>> > > We haven't touched either of them for the 1.10 release, and it
> > > seems
> > > >>> > > quite unlikely that we will do so in the future.
> > > >>> > >
> > > >>> > > We could finally close a number of test stability tickets that
> > have
> > > >>> been
> > > >>> > > lingering for quite a while.
> > > >>> > >
> > > >>> > >
> > > >>> > > Regards,
> > > >>> > >
> > > >>> > > Chesnay
> > > >>> > >
> > > >>> > >
> > > >>> >
> > > >>> > --
> > > >>> >
> > > >>> > Konstantin Knauf | Solutions Architect
> > > >>> >
> > > >>> > [phone]
> > > >>> >
> > > >>> >
> > > >>> > Follow us @VervericaData Ververica <https://www.ververica.com/>
> > > >>> >
> > > >>> >
> > > >>> > --
> > > >>> >
> > > >>> > Join Flink Forward <https://flink-forward.org/> - The Apache
> Flink
> > > >>> > Conference
> > > >>> >
> > > >>> > Stream Processing | Event Driven | Real Time
> > > >>> >
> > > >>> > --
> > > >>> >
> > > >>> > Ververica GmbH | Invalidenstrasse 115, 10115 Berlin, Germany
> > > >>> >
> > > >>> > --
> > > >>> > Ververica GmbH
> > > >>> > Registered at Amtsgericht Charlottenburg: HRB 158244 B
> > > >>> > Managing Directors: Timothy Alexander Steinert, Yip Park Tung
> > Jason,
> > > Ji
> > > >>> > (Tony) Cheng
> > > >>> >
> > > >>>
> > > >>
> > > >
> > >
> >
> >
> > --
> >
> > Benchao Li
> > School of Electronics Engineering and Computer Science, Peking University
> > Tel:[phone]
> > Email: [hidden email]; [hidden email]
> >
>

[Chesnay Schepler-3]

Users can continue to use the 1.9 versions of the 0.8/0.9 connectors
with future versions of Flink.

We just make it official that we no longer actively develop them,

On 08/12/2019 12:22, Becket Qin wrote:

> Hi all,
>
> Sorry for being late on this thread. My hunch is that 0.8 and 0.9 is old
> enough to deprecate. However, after checking the downloads statistics from
> Apache, I am not completely sure anymore.
>
> Here are some Kafka broker jar download stats from the past month according
> to Apache Nexus[1]. Since Flink only supports Scala 2.11, I only listed
> Scala 2.11 here.
>
> Scala 2.11:
> version downloads percentage
> 0.8.2.1 215478 27.01%
> 2.0.1 155984 19.55%
> 1.1.0 85794 10.75%
> 1.0.1 53745 6.74%
> 0.9.0.1 39825 4.99%
>
> And out of all Scala versions in the broker downloads, Scala 2.11 accounts
> about 75% of the total downloads. From all the numbers I can see, it looks
> there are about 1/4 of the users still using Kafka 0.8. I have to admit it
> is also quite counter intuitive for me. I am pretty sure that new users are
> not going to use Kafka 0.8 anymore, but the existing users are moving
> slowly.
>
> However, these stats may not necessarily prevent us from dropping connector
> support for Kafka 0.8 and 0.9, if we assume the users are not going to
> upgrade their Flink version, which might be the case given they did not
> upgrade their Kafka versions for long either.
>
> To avoid surprises, I'd still prefer following the proper deprecation
> process. i.e. mark the connectors as deprecated, announce the deprecation
> plan in the release note, and remove them 1-2 releases later if we don't
> hear complaints from the users.
>
> Thanks,
>
> Jiangjie (Becket) Qin
>
> [1] https://repository.apache.org/#central-stat
>
>
> On Sat, Dec 7, 2019 at 12:42 AM Thomas Weise <[hidden email]> wrote:
>
>> +1
>>
>>
>> On Fri, Dec 6, 2019 at 3:46 AM Benchao Li <[hidden email]> wrote:
>>
>>> +1 for dropping.
>>>
>>> Zhenghua Gao <[hidden email]> 于2019年12月5日周四 下午4:05写道：
>>>
>>>> +1 for dropping.
>>>>
>>>> *Best Regards,*
>>>> *Zhenghua Gao*
>>>>
>>>>
>>>> On Thu, Dec 5, 2019 at 11:08 AM Dian Fu <[hidden email]> wrote:
>>>>
>>>>> +1 for dropping them.
>>>>>
>>>>> Just FYI: there was a similar discussion few months ago [1].
>>>>>
>>>>> [1]
>>>>>
>> http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/DISCUSS-Drop-older-versions-of-Kafka-Connectors-0-9-0-10-for-Flink-1-10-td29916.html#a29997
>>>>> 在 2019年12月5日，上午10:29，vino yang <[hidden email]> 写道：
>>>>>
>>>>> +1
>>>>>
>>>>> jincheng sun <[hidden email]> 于2019年12月5日周四 上午10:26写道：
>>>>>
>>>>>> +1  for drop it, and Thanks for bring up this discussion Chesnay!
>>>>>>
>>>>>> Best,
>>>>>> Jincheng
>>>>>>
>>>>>> Jark Wu <[hidden email]> 于2019年12月5日周四 上午10:19写道：
>>>>>>
>>>>>>> +1 for dropping, also cc'ed user mailing list.
>>>>>>>
>>>>>>>
>>>>>>> Best,
>>>>>>> Jark
>>>>>>>
>>>>>>> On Thu, 5 Dec 2019 at 03:39, Konstantin Knauf <
>>>> [hidden email]>
>>>>>>> wrote:
>>>>>>>
>>>>>>>> Hi Chesnay,
>>>>>>>>
>>>>>>>> +1 for dropping. I have not heard from any user using 0.8 or 0.9
>>> for
>>>> a
>>>>>>> long
>>>>>>>> while.
>>>>>>>>
>>>>>>>> Cheers,
>>>>>>>>
>>>>>>>> Konstantin
>>>>>>>>
>>>>>>>> On Wed, Dec 4, 2019 at 1:57 PM Chesnay Schepler <
>>> [hidden email]>
>>>>>>>> wrote:
>>>>>>>>
>>>>>>>>> Hello,
>>>>>>>>>
>>>>>>>>> What's everyone's take on dropping the Kafka 0.8/0.9 connectors
>>>> from
>>>>>>> the
>>>>>>>>> Flink codebase?
>>>>>>>>>
>>>>>>>>> We haven't touched either of them for the 1.10 release, and it
>>>> seems
>>>>>>>>> quite unlikely that we will do so in the future.
>>>>>>>>>
>>>>>>>>> We could finally close a number of test stability tickets that
>>> have
>>>>>>> been
>>>>>>>>> lingering for quite a while.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Regards,
>>>>>>>>>
>>>>>>>>> Chesnay
>>>>>>>>>
>>>>>>>>>
>>>>>>>> --
>>>>>>>>
>>>>>>>> Konstantin Knauf | Solutions Architect
>>>>>>>>
>>>>>>>> [phone]
>>>>>>>>
>>>>>>>>
>>>>>>>> Follow us @VervericaData Ververica <https://www.ververica.com/>
>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>>
>>>>>>>> Join Flink Forward <https://flink-forward.org/> - The Apache
>> Flink
>>>>>>>> Conference
>>>>>>>>
>>>>>>>> Stream Processing | Event Driven | Real Time
>>>>>>>>
>>>>>>>> --
>>>>>>>>
>>>>>>>> Ververica GmbH | Invalidenstrasse 115, 10115 Berlin, Germany
>>>>>>>>
>>>>>>>> --
>>>>>>>> Ververica GmbH
>>>>>>>> Registered at Amtsgericht Charlottenburg: HRB 158244 B
>>>>>>>> Managing Directors: Timothy Alexander Steinert, Yip Park Tung
>>> Jason,
>>>> Ji
>>>>>>>> (Tony) Cheng
>>>>>>>>
>>>
>>> --
>>>
>>> Benchao Li
>>> School of Electronics Engineering and Computer Science, Peking University
>>> Tel:[phone]
>>> Email: [hidden email]; [hidden email]
>>>

[Jingsong Li]

Thanks Chesnay,

+1 to make it official that we no longer actively develop them but user can
still use.

Best,
Jingsong Lee

On Mon, Dec 9, 2019 at 4:47 AM Chesnay Schepler <[hidden email]> wrote:

> Users can continue to use the 1.9 versions of the 0.8/0.9 connectors
> with future versions of Flink.
>
> We just make it official that we no longer actively develop them,
>
> On 08/12/2019 12:22, Becket Qin wrote:
> > Hi all,
> >
> > Sorry for being late on this thread. My hunch is that 0.8 and 0.9 is old
> > enough to deprecate. However, after checking the downloads statistics
> from
> > Apache, I am not completely sure anymore.
> >
> > Here are some Kafka broker jar download stats from the past month
> according
> > to Apache Nexus[1]. Since Flink only supports Scala 2.11, I only listed
> > Scala 2.11 here.
> >
> > Scala 2.11:
> > version downloads percentage
> > 0.8.2.1 215478 27.01%
> > 2.0.1 155984 19.55%
> > 1.1.0 85794 10.75%
> > 1.0.1 53745 6.74%
> > 0.9.0.1 39825 4.99%
> >
> > And out of all Scala versions in the broker downloads, Scala 2.11
> accounts
> > about 75% of the total downloads. From all the numbers I can see, it
> looks
> > there are about 1/4 of the users still using Kafka 0.8. I have to admit
> it
> > is also quite counter intuitive for me. I am pretty sure that new users
> are
> > not going to use Kafka 0.8 anymore, but the existing users are moving
> > slowly.
> >
> > However, these stats may not necessarily prevent us from dropping
> connector
> > support for Kafka 0.8 and 0.9, if we assume the users are not going to
> > upgrade their Flink version, which might be the case given they did not
> > upgrade their Kafka versions for long either.
> >
> > To avoid surprises, I'd still prefer following the proper deprecation
> > process. i.e. mark the connectors as deprecated, announce the deprecation
> > plan in the release note, and remove them 1-2 releases later if we don't
> > hear complaints from the users.
> >
> > Thanks,
> >
> > Jiangjie (Becket) Qin
> >
> > [1] https://repository.apache.org/#central-stat
> >
> >
> > On Sat, Dec 7, 2019 at 12:42 AM Thomas Weise <[hidden email]> wrote:
> >
> >> +1
> >>
> >>
> >> On Fri, Dec 6, 2019 at 3:46 AM Benchao Li <[hidden email]> wrote:
> >>
> >>> +1 for dropping.
> >>>
> >>> Zhenghua Gao <[hidden email]> 于2019年12月5日周四 下午4:05写道：
> >>>
> >>>> +1 for dropping.
> >>>>
> >>>> *Best Regards,*
> >>>> *Zhenghua Gao*
> >>>>
> >>>>
> >>>> On Thu, Dec 5, 2019 at 11:08 AM Dian Fu <[hidden email]>
> wrote:
> >>>>
> >>>>> +1 for dropping them.
> >>>>>
> >>>>> Just FYI: there was a similar discussion few months ago [1].
> >>>>>
> >>>>> [1]
> >>>>>
> >>
> http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/DISCUSS-Drop-older-versions-of-Kafka-Connectors-0-9-0-10-for-Flink-1-10-td29916.html#a29997
> >>>>> 在 2019年12月5日，上午10:29，vino yang <[hidden email]> 写道：
> >>>>>
> >>>>> +1
> >>>>>
> >>>>> jincheng sun <[hidden email]> 于2019年12月5日周四 上午10:26写道：
> >>>>>
> >>>>>> +1  for drop it, and Thanks for bring up this discussion Chesnay!
> >>>>>>
> >>>>>> Best,
> >>>>>> Jincheng
> >>>>>>
> >>>>>> Jark Wu <[hidden email]> 于2019年12月5日周四 上午10:19写道：
> >>>>>>
> >>>>>>> +1 for dropping, also cc'ed user mailing list.
> >>>>>>>
> >>>>>>>
> >>>>>>> Best,
> >>>>>>> Jark
> >>>>>>>
> >>>>>>> On Thu, 5 Dec 2019 at 03:39, Konstantin Knauf <
> >>>> [hidden email]>
> >>>>>>> wrote:
> >>>>>>>
> >>>>>>>> Hi Chesnay,
> >>>>>>>>
> >>>>>>>> +1 for dropping. I have not heard from any user using 0.8 or 0.9
> >>> for
> >>>> a
> >>>>>>> long
> >>>>>>>> while.
> >>>>>>>>
> >>>>>>>> Cheers,
> >>>>>>>>
> >>>>>>>> Konstantin
> >>>>>>>>
> >>>>>>>> On Wed, Dec 4, 2019 at 1:57 PM Chesnay Schepler <
> >>> [hidden email]>
> >>>>>>>> wrote:
> >>>>>>>>
> >>>>>>>>> Hello,
> >>>>>>>>>
> >>>>>>>>> What's everyone's take on dropping the Kafka 0.8/0.9 connectors
> >>>> from
> >>>>>>> the
> >>>>>>>>> Flink codebase?
> >>>>>>>>>
> >>>>>>>>> We haven't touched either of them for the 1.10 release, and it
> >>>> seems
> >>>>>>>>> quite unlikely that we will do so in the future.
> >>>>>>>>>
> >>>>>>>>> We could finally close a number of test stability tickets that
> >>> have
> >>>>>>> been
> >>>>>>>>> lingering for quite a while.
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>> Regards,
> >>>>>>>>>
> >>>>>>>>> Chesnay
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>> --
> >>>>>>>>
> >>>>>>>> Konstantin Knauf | Solutions Architect
> >>>>>>>>
> >>>>>>>> [phone]
> >>>>>>>>
> >>>>>>>>
> >>>>>>>> Follow us @VervericaData Ververica <https://www.ververica.com/>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>> --
> >>>>>>>>
> >>>>>>>> Join Flink Forward <https://flink-forward.org/> - The Apache
> >> Flink
> >>>>>>>> Conference
> >>>>>>>>
> >>>>>>>> Stream Processing | Event Driven | Real Time
> >>>>>>>>
> >>>>>>>> --
> >>>>>>>>
> >>>>>>>> Ververica GmbH | Invalidenstrasse 115, 10115 Berlin, Germany
> >>>>>>>>
> >>>>>>>> --
> >>>>>>>> Ververica GmbH
> >>>>>>>> Registered at Amtsgericht Charlottenburg: HRB 158244 B
> >>>>>>>> Managing Directors: Timothy Alexander Steinert, Yip Park Tung
> >>> Jason,
> >>>> Ji
> >>>>>>>> (Tony) Cheng
> >>>>>>>>
> >>>
> >>> --
> >>>
> >>> Benchao Li
> >>> School of Electronics Engineering and Computer Science, Peking
> University
> >>> Tel:[phone]
> >>> Email: [hidden email]; [hidden email]
> >>>
>
>

--
Best, Jingsong Lee

[Yu Li]

+1 for dropping the official support (no longer actively develop them).

Thanks for bring this up Chesnay!

Best Regards,
Yu


On Mon, 9 Dec 2019 at 11:57, Jingsong Li <[hidden email]> wrote:

> Thanks Chesnay,
>
> +1 to make it official that we no longer actively develop them but user can
> still use.
>
> Best,
> Jingsong Lee
>
> On Mon, Dec 9, 2019 at 4:47 AM Chesnay Schepler <[hidden email]>
> wrote:
>
> > Users can continue to use the 1.9 versions of the 0.8/0.9 connectors
> > with future versions of Flink.
> >
> > We just make it official that we no longer actively develop them,
> >
> > On 08/12/2019 12:22, Becket Qin wrote:
> > > Hi all,
> > >
> > > Sorry for being late on this thread. My hunch is that 0.8 and 0.9 is
> old
> > > enough to deprecate. However, after checking the downloads statistics
> > from
> > > Apache, I am not completely sure anymore.
> > >
> > > Here are some Kafka broker jar download stats from the past month
> > according
> > > to Apache Nexus[1]. Since Flink only supports Scala 2.11, I only listed
> > > Scala 2.11 here.
> > >
> > > Scala 2.11:
> > > version downloads percentage
> > > 0.8.2.1 215478 27.01%
> > > 2.0.1 155984 19.55%
> > > 1.1.0 85794 10.75%
> > > 1.0.1 53745 6.74%
> > > 0.9.0.1 39825 4.99%
> > >
> > > And out of all Scala versions in the broker downloads, Scala 2.11
> > accounts
> > > about 75% of the total downloads. From all the numbers I can see, it
> > looks
> > > there are about 1/4 of the users still using Kafka 0.8. I have to admit
> > it
> > > is also quite counter intuitive for me. I am pretty sure that new users
> > are
> > > not going to use Kafka 0.8 anymore, but the existing users are moving
> > > slowly.
> > >
> > > However, these stats may not necessarily prevent us from dropping
> > connector
> > > support for Kafka 0.8 and 0.9, if we assume the users are not going to
> > > upgrade their Flink version, which might be the case given they did not
> > > upgrade their Kafka versions for long either.
> > >
> > > To avoid surprises, I'd still prefer following the proper deprecation
> > > process. i.e. mark the connectors as deprecated, announce the
> deprecation
> > > plan in the release note, and remove them 1-2 releases later if we
> don't
> > > hear complaints from the users.
> > >
> > > Thanks,
> > >
> > > Jiangjie (Becket) Qin
> > >
> > > [1] https://repository.apache.org/#central-stat
> > >
> > >
> > > On Sat, Dec 7, 2019 at 12:42 AM Thomas Weise <[hidden email]> wrote:
> > >
> > >> +1
> > >>
> > >>
> > >> On Fri, Dec 6, 2019 at 3:46 AM Benchao Li <[hidden email]>
> wrote:
> > >>
> > >>> +1 for dropping.
> > >>>
> > >>> Zhenghua Gao <[hidden email]> 于2019年12月5日周四 下午4:05写道：
> > >>>
> > >>>> +1 for dropping.
> > >>>>
> > >>>> *Best Regards,*
> > >>>> *Zhenghua Gao*
> > >>>>
> > >>>>
> > >>>> On Thu, Dec 5, 2019 at 11:08 AM Dian Fu <[hidden email]>
> > wrote:
> > >>>>
> > >>>>> +1 for dropping them.
> > >>>>>
> > >>>>> Just FYI: there was a similar discussion few months ago [1].
> > >>>>>
> > >>>>> [1]
> > >>>>>
> > >>
> >
> http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/DISCUSS-Drop-older-versions-of-Kafka-Connectors-0-9-0-10-for-Flink-1-10-td29916.html#a29997
> > >>>>> 在 2019年12月5日，上午10:29，vino yang <[hidden email]> 写道：
> > >>>>>
> > >>>>> +1
> > >>>>>
> > >>>>> jincheng sun <[hidden email]> 于2019年12月5日周四 上午10:26写道：
> > >>>>>
> > >>>>>> +1  for drop it, and Thanks for bring up this discussion Chesnay!
> > >>>>>>
> > >>>>>> Best,
> > >>>>>> Jincheng
> > >>>>>>
> > >>>>>> Jark Wu <[hidden email]> 于2019年12月5日周四 上午10:19写道：
> > >>>>>>
> > >>>>>>> +1 for dropping, also cc'ed user mailing list.
> > >>>>>>>
> > >>>>>>>
> > >>>>>>> Best,
> > >>>>>>> Jark
> > >>>>>>>
> > >>>>>>> On Thu, 5 Dec 2019 at 03:39, Konstantin Knauf <
> > >>>> [hidden email]>
> > >>>>>>> wrote:
> > >>>>>>>
> > >>>>>>>> Hi Chesnay,
> > >>>>>>>>
> > >>>>>>>> +1 for dropping. I have not heard from any user using 0.8 or 0.9
> > >>> for
> > >>>> a
> > >>>>>>> long
> > >>>>>>>> while.
> > >>>>>>>>
> > >>>>>>>> Cheers,
> > >>>>>>>>
> > >>>>>>>> Konstantin
> > >>>>>>>>
> > >>>>>>>> On Wed, Dec 4, 2019 at 1:57 PM Chesnay Schepler <
> > >>> [hidden email]>
> > >>>>>>>> wrote:
> > >>>>>>>>
> > >>>>>>>>> Hello,
> > >>>>>>>>>
> > >>>>>>>>> What's everyone's take on dropping the Kafka 0.8/0.9 connectors
> > >>>> from
> > >>>>>>> the
> > >>>>>>>>> Flink codebase?
> > >>>>>>>>>
> > >>>>>>>>> We haven't touched either of them for the 1.10 release, and it
> > >>>> seems
> > >>>>>>>>> quite unlikely that we will do so in the future.
> > >>>>>>>>>
> > >>>>>>>>> We could finally close a number of test stability tickets that
> > >>> have
> > >>>>>>> been
> > >>>>>>>>> lingering for quite a while.
> > >>>>>>>>>
> > >>>>>>>>>
> > >>>>>>>>> Regards,
> > >>>>>>>>>
> > >>>>>>>>> Chesnay
> > >>>>>>>>>
> > >>>>>>>>>
> > >>>>>>>> --
> > >>>>>>>>
> > >>>>>>>> Konstantin Knauf | Solutions Architect
> > >>>>>>>>
> > >>>>>>>> [phone]
> > >>>>>>>>
> > >>>>>>>>
> > >>>>>>>> Follow us @VervericaData Ververica <https://www.ververica.com/>
> > >>>>>>>>
> > >>>>>>>>
> > >>>>>>>> --
> > >>>>>>>>
> > >>>>>>>> Join Flink Forward <https://flink-forward.org/> - The Apache
> > >> Flink
> > >>>>>>>> Conference
> > >>>>>>>>
> > >>>>>>>> Stream Processing | Event Driven | Real Time
> > >>>>>>>>
> > >>>>>>>> --
> > >>>>>>>>
> > >>>>>>>> Ververica GmbH | Invalidenstrasse 115, 10115 Berlin, Germany
> > >>>>>>>>
> > >>>>>>>> --
> > >>>>>>>> Ververica GmbH
> > >>>>>>>> Registered at Amtsgericht Charlottenburg: HRB 158244 B
> > >>>>>>>> Managing Directors: Timothy Alexander Steinert, Yip Park Tung
> > >>> Jason,
> > >>>> Ji
> > >>>>>>>> (Tony) Cheng
> > >>>>>>>>
> > >>>
> > >>> --
> > >>>
> > >>> Benchao Li
> > >>> School of Electronics Engineering and Computer Science, Peking
> > University
> > >>> Tel:[phone]
> > >>> Email: [hidden email]; [hidden email]
> > >>>
> >
> >
>
> --
> Best, Jingsong Lee
>

[Becket Qin]

+1 for not actively developing connector for Kafka 0.8 / 0.9 and mark them
as deprecated.

Thanks,

Jiangjie (Becket) Qin

On Mon, Dec 9, 2019 at 7:40 PM Yu Li <[hidden email]> wrote:

> +1 for dropping the official support (no longer actively develop them).
>
> Thanks for bring this up Chesnay!
>
> Best Regards,
> Yu
>
>
> On Mon, 9 Dec 2019 at 11:57, Jingsong Li <[hidden email]> wrote:
>
>> Thanks Chesnay,
>>
>> +1 to make it official that we no longer actively develop them but user
>> can
>> still use.
>>
>> Best,
>> Jingsong Lee
>>
>> On Mon, Dec 9, 2019 at 4:47 AM Chesnay Schepler <[hidden email]>
>> wrote:
>>
>> > Users can continue to use the 1.9 versions of the 0.8/0.9 connectors
>> > with future versions of Flink.
>> >
>> > We just make it official that we no longer actively develop them,
>> >
>> > On 08/12/2019 12:22, Becket Qin wrote:
>> > > Hi all,
>> > >
>> > > Sorry for being late on this thread. My hunch is that 0.8 and 0.9 is
>> old
>> > > enough to deprecate. However, after checking the downloads statistics
>> > from
>> > > Apache, I am not completely sure anymore.
>> > >
>> > > Here are some Kafka broker jar download stats from the past month
>> > according
>> > > to Apache Nexus[1]. Since Flink only supports Scala 2.11, I only
>> listed
>> > > Scala 2.11 here.
>> > >
>> > > Scala 2.11:
>> > > version downloads percentage
>> > > 0.8.2.1 215478 27.01%
>> > > 2.0.1 155984 19.55%
>> > > 1.1.0 85794 10.75%
>> > > 1.0.1 53745 6.74%
>> > > 0.9.0.1 39825 4.99%
>> > >
>> > > And out of all Scala versions in the broker downloads, Scala 2.11
>> > accounts
>> > > about 75% of the total downloads. From all the numbers I can see, it
>> > looks
>> > > there are about 1/4 of the users still using Kafka 0.8. I have to
>> admit
>> > it
>> > > is also quite counter intuitive for me. I am pretty sure that new
>> users
>> > are
>> > > not going to use Kafka 0.8 anymore, but the existing users are moving
>> > > slowly.
>> > >
>> > > However, these stats may not necessarily prevent us from dropping
>> > connector
>> > > support for Kafka 0.8 and 0.9, if we assume the users are not going to
>> > > upgrade their Flink version, which might be the case given they did
>> not
>> > > upgrade their Kafka versions for long either.
>> > >
>> > > To avoid surprises, I'd still prefer following the proper deprecation
>> > > process. i.e. mark the connectors as deprecated, announce the
>> deprecation
>> > > plan in the release note, and remove them 1-2 releases later if we
>> don't
>> > > hear complaints from the users.
>> > >
>> > > Thanks,
>> > >
>> > > Jiangjie (Becket) Qin
>> > >
>> > > [1] https://repository.apache.org/#central-stat
>> > >
>> > >
>> > > On Sat, Dec 7, 2019 at 12:42 AM Thomas Weise <[hidden email]> wrote:
>> > >
>> > >> +1
>> > >>
>> > >>
>> > >> On Fri, Dec 6, 2019 at 3:46 AM Benchao Li <[hidden email]>
>> wrote:
>> > >>
>> > >>> +1 for dropping.
>> > >>>
>> > >>> Zhenghua Gao <[hidden email]> 于2019年12月5日周四 下午4:05写道：
>> > >>>
>> > >>>> +1 for dropping.
>> > >>>>
>> > >>>> *Best Regards,*
>> > >>>> *Zhenghua Gao*
>> > >>>>
>> > >>>>
>> > >>>> On Thu, Dec 5, 2019 at 11:08 AM Dian Fu <[hidden email]>
>> > wrote:
>> > >>>>
>> > >>>>> +1 for dropping them.
>> > >>>>>
>> > >>>>> Just FYI: there was a similar discussion few months ago [1].
>> > >>>>>
>> > >>>>> [1]
>> > >>>>>
>> > >>
>> >
>> http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/DISCUSS-Drop-older-versions-of-Kafka-Connectors-0-9-0-10-for-Flink-1-10-td29916.html#a29997
>> > >>>>> 在 2019年12月5日，上午10:29，vino yang <[hidden email]> 写道：
>> > >>>>>
>> > >>>>> +1
>> > >>>>>
>> > >>>>> jincheng sun <[hidden email]> 于2019年12月5日周四 上午10:26写道：
>> > >>>>>
>> > >>>>>> +1  for drop it, and Thanks for bring up this discussion Chesnay!
>> > >>>>>>
>> > >>>>>> Best,
>> > >>>>>> Jincheng
>> > >>>>>>
>> > >>>>>> Jark Wu <[hidden email]> 于2019年12月5日周四 上午10:19写道：
>> > >>>>>>
>> > >>>>>>> +1 for dropping, also cc'ed user mailing list.
>> > >>>>>>>
>> > >>>>>>>
>> > >>>>>>> Best,
>> > >>>>>>> Jark
>> > >>>>>>>
>> > >>>>>>> On Thu, 5 Dec 2019 at 03:39, Konstantin Knauf <
>> > >>>> [hidden email]>
>> > >>>>>>> wrote:
>> > >>>>>>>
>> > >>>>>>>> Hi Chesnay,
>> > >>>>>>>>
>> > >>>>>>>> +1 for dropping. I have not heard from any user using 0.8 or
>> 0.9
>> > >>> for
>> > >>>> a
>> > >>>>>>> long
>> > >>>>>>>> while.
>> > >>>>>>>>
>> > >>>>>>>> Cheers,
>> > >>>>>>>>
>> > >>>>>>>> Konstantin
>> > >>>>>>>>
>> > >>>>>>>> On Wed, Dec 4, 2019 at 1:57 PM Chesnay Schepler <
>> > >>> [hidden email]>
>> > >>>>>>>> wrote:
>> > >>>>>>>>
>> > >>>>>>>>> Hello,
>> > >>>>>>>>>
>> > >>>>>>>>> What's everyone's take on dropping the Kafka 0.8/0.9
>> connectors
>> > >>>> from
>> > >>>>>>> the
>> > >>>>>>>>> Flink codebase?
>> > >>>>>>>>>
>> > >>>>>>>>> We haven't touched either of them for the 1.10 release, and it
>> > >>>> seems
>> > >>>>>>>>> quite unlikely that we will do so in the future.
>> > >>>>>>>>>
>> > >>>>>>>>> We could finally close a number of test stability tickets that
>> > >>> have
>> > >>>>>>> been
>> > >>>>>>>>> lingering for quite a while.
>> > >>>>>>>>>
>> > >>>>>>>>>
>> > >>>>>>>>> Regards,
>> > >>>>>>>>>
>> > >>>>>>>>> Chesnay
>> > >>>>>>>>>
>> > >>>>>>>>>
>> > >>>>>>>> --
>> > >>>>>>>>
>> > >>>>>>>> Konstantin Knauf | Solutions Architect
>> > >>>>>>>>
>> > >>>>>>>> [phone]
>> > >>>>>>>>
>> > >>>>>>>>
>> > >>>>>>>> Follow us @VervericaData Ververica <https://www.ververica.com/
>> >
>> > >>>>>>>>
>> > >>>>>>>>
>> > >>>>>>>> --
>> > >>>>>>>>
>> > >>>>>>>> Join Flink Forward <https://flink-forward.org/> - The Apache
>> > >> Flink
>> > >>>>>>>> Conference
>> > >>>>>>>>
>> > >>>>>>>> Stream Processing | Event Driven | Real Time
>> > >>>>>>>>
>> > >>>>>>>> --
>> > >>>>>>>>
>> > >>>>>>>> Ververica GmbH | Invalidenstrasse 115, 10115 Berlin, Germany
>> > >>>>>>>>
>> > >>>>>>>> --
>> > >>>>>>>> Ververica GmbH
>> > >>>>>>>> Registered at Amtsgericht Charlottenburg: HRB 158244 B
>> > >>>>>>>> Managing Directors: Timothy Alexander Steinert, Yip Park Tung
>> > >>> Jason,
>> > >>>> Ji
>> > >>>>>>>> (Tony) Cheng
>> > >>>>>>>>
>> > >>>
>> > >>> --
>> > >>>
>> > >>> Benchao Li
>> > >>> School of Electronics Engineering and Computer Science, Peking
>> > University
>> > >>> Tel:[phone]
>> > >>> Email: [hidden email]; [hidden email]
>> > >>>
>> >
>> >
>>
>> --
>> Best, Jingsong Lee
>>
>