+1 to remove both the 1.10 and 1.11 connectors.
The connectors have not been actively developed for some time. They are
basically just sitting around causing noise by causing test
instabilities and eating CI time.
It would also allow us to really simplify the module structure of the
Kafka connectors.
Users may continue to use the 1.11 version of the connectors with future
Flink versions, and we may even provide critical bug fixes in a 1.11
bugfix release (albeit unlikely).
While ultimately this is a separate topic I would also be in favor of
removing any migration paths we have from 0.11 to the universal connector;
as these are already present in 1.11 users may migrate to the universal
connector before jumping to Flink 1.12+.
On 25/08/2020 18:49, Konstantin Knauf wrote:
Hi Aljoscha,
I am assuming you're asking about dropping the
flink-connector-kafka-0.10/0.11 modules, right? Or are you talking
about removing support for Kafka 0.10/0.11 from the universal connector?
I am in favor of removing flink-connector-kafka-0.10/0.11 in the next
release. These modules would still be available in Flink 1.11- as a
reference, and could be used with Flink 1.12+ with small or no
modifications. To my knowledge, you also use the universal Kafka
connector with 0.10 brokers, but there might be a performance
penalty if I remember correctly. In general, I find it important
to continuously reduce baggage that accumulates over time and this
seems like a good opportunity.
Best,
Konstantin
On Tue, Aug 25, 2020 at 4:59 AM Paul Lam <paullin3...@gmail.com
<mailto:paullin3...@gmail.com>> wrote:
Hi Aljoscha,
I'm lightly leaning towards keeping the 0.10 connector, for Kafka
0.10 still has a steady user base in my observation.
But if we drop 0.10 connector, can we ensure the users would be
able to smoothly migrate to 0.11 connector/universal connector?
If I remember correctly, the universal connector is compatible
with 0.10 brokers, but I want to double check that.
Best,
Paul Lam
2020年8月24日 22:46，Aljoscha Krettek <aljos...@apache.org
<mailto:aljos...@apache.org>> 写道：
Hi all,
this thought came up on FLINK-17260 [1] but I think it would be a
good idea in general. The issue reminded us that Kafka didn't
have an idempotent/fault-tolerant Producer before Kafka 0.11.0.
By now we have had the "modern" Kafka connector that roughly
follows new Kafka releases for a while and this one supports
Kafka cluster versions as far back as 0.10.2.0 (I believe).
What are your thoughts on removing support for older Kafka
versions? And yes, I know that we had multiple discussions like
this in the past but I'm trying to gauge the current sentiment.
I'm cross-posting to the user-ml since this is important for both
users and developers.
Best,
Aljoscha
[1] https://issues.apache.org/jira/browse/FLINK-17260
--
Konstantin Knauf
https://twitter.com/snntrable
https://github.com/knaufk
