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From "Matthias J. Sax" <matth...@confluent.io>
Subject Re: KAFKA-6144(or other ticket to resolve)
Date Tue, 04 Dec 2018 17:32:12 GMT
Thanks Nikolay,

of course we would like to get this ticket resolved! Just a heads up:
it's a complex beast and we need to lay out a sound design. Thus, I
expect a long KIP discussion. If this does (hopefully) not scare you,
feel free to pick it up.

Also note, related https://issues.apache.org/jira/browse/KAFKA-6555 (and
the corresponding PR) -- please also sync with Ashish (comment on the
Jira) if he is still interested in working on this. He got silent for a
while, so maybe not, but we should double check.

IMHO, we should tackle the issue holistically and thus first discuss:

 - Do we want to allow to query state active stores?
 - Do we want to allow to query Standby stores?
 - What are the pros/cons for both approaches?
 - Could it make sense to support both?
 - If we support both, can we design/implement them independent or do we
need one holistic design?
 - Do we need user facing API changes?
 - Is this feature enabled by default, or do users need to opt-in?

And maybe others. Thus, a good starting point might be to write up a KIP
that covers all those questions, and proposes desired semantics and how
developers would use this feature. As a second step, we can think about
implementation details.

How does this sound?


-Matthias

On 12/3/18 11:27 PM, Nikolay Izhikov wrote:
> Hello, Kafka developers.
> 
> I found the link to a KAFKA-6144 in youtube video [1]
> Gwen, Matthias, great video by the way :)
> 
> I want to know - is this ticket actual for the Kafka product?
> 
> Are commiters and other community members are interested in it's resolve?
> 
> It unassigned for now and I want to work on it.
> Can I expect that some commiters help me with it?
> 
> May be you can offer some other ticket to me, that has to be resolved?
> 
> I'm experienced java programmer with 1 KIP done and a couple commits in Kafka trunk :)
> 
> [1] https://www.youtube.com/watch?v=TG77-nNR1yw
> 


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