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From Flavio Pompermaier <pomperma...@okkam.it>
Subject Re: Flink SQL Gateway
Date Thu, 16 Apr 2020 12:24:15 GMT
Basically we want to give a UI to the user to register its data sources
(i.e. catalogs in the Flink world), preview them (SELECT * LIMIT 100 for
example) but, in the case of JDBC catalogs, also to see relationships and
We don't want to reimplement the wheel so we would like to reuse and
contribute to Flink as much as possible (since then in the batch jobs we
use Flink and we don't like to do the same work twice..).
In this way we can contribute to Flink if something is missing in the SQL
Gateway. However I don't know how to extend the existing stuff (for example
if I want table relationships and triggers)..


On Thu, Apr 16, 2020 at 1:38 PM godfrey he <godfreyhe@gmail.com> wrote:

> Hi Flavio,
> Since 1.11(master), Flink supports "CREATE CATALOG ..." [1],
> we can use this statement create catalog dynamically.
> Currently, Catalog[2] dose not supports any operations on TRIGGER.
> Flink can't also use such info now. What's your user scenario?
> [1] https://issues.apache.org/jira/browse/FLINK-15349
> [2]
> https://ci.apache.org/projects/flink/flink-docs-stable/dev/table/catalogs.html#catalog-api
> Best,
> Godfrey
> Flavio Pompermaier <pompermaier@okkam.it> 于2020年4月16日周四 下午6:16写道:
>> Hi Godfrey,
>> I'd like to use the SQL gateway as a data proxy in our architecture.
>> However, catalogs in our use case are not know at configuration time..
>> is there a way to permit to register a JDBC catalog (for example when I
>> want to connect to a Postgres database)?
>> What if I want to add SHOW TRIGGERS? Do you think it could be interesting?
>> On Thu, Apr 16, 2020 at 10:55 AM godfrey he <godfreyhe@gmail.com> wrote:
>>> Hi Flavio,
>>> We prose FLIP-91[1] to support SQL Gateway at the beginning of this
>>> year.
>>> After a long discussion, we reached an agreement that
>>> SQL Gateway is an eco-system under ververia as first step.[2]
>>> Which could help SQL Gateway move forward faster.
>>> Now we almost finish first version development, some users are trying it
>>> out.
>>> Any suggestions are welcome!
>>> [1]
>>> https://docs.google.com/document/d/1DKpFdov1o_ObvrCmU-5xi-VrT6nR2gxq-BbswSSI9j8/edit?ts=5e4cd711#heading=h.sru3xzbt2i1k
>>> [2] https://github.com/ververica/flink-sql-gateway
>>> Best,
>>> Godfrey
>>> Flavio Pompermaier <pompermaier@okkam.it> 于2020年4月16日周四 下午4:42写道:
>>>> Hi Jeff,
>>>> FLIP-24 [1] proposed to develop a SQL gateway to query Flink via SQL
>>>> but since then no progress has been made on that point. Do you think that
>>>> Zeppelin could be used somehow as a SQL Gateway towards Flink for the
>>>> moment?
>>>> Any chance that a Flink SQL Gateway could ever be developed? Is there
>>>> anybody interested in this?
>>>> Best,
>>>> Flavio
>>>> [1]
>>>> https://cwiki.apache.org/confluence/display/FLINK/FLIP-24+-+SQL+Client

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