Hi Lincoln, Thanks for your detailed comments!
Supporting comments for `Catalog` is a really helpful feature, I agree with you to make it introduced in this FLIP, thank you for pointing that out :) Concerning the implementation, I propose to introduce `getComment()` method in `CatalogDescriptor`, and the reasons are as follows. WDYT? 1. For the sake of design consistency, follow the design of FLIP-295 [1] which introduced `CatalogStore` component, `CatalogDescriptor` includes names and attributes, both of which are used to describe the catalog, and `comment` can be added smoothly. 2. Extending the existing class rather than add new method to the existing interface, Especially, the `Catalog` interface, as a core interface, is used by a series of important components such as `CatalogFactory`, `CatalogManager` and `FactoryUtil`, and is implemented by a large number of connectors such as JDBC, Paimon, and Hive. Adding methods to it will greatly increase the implementation complexity, and more importantly, increase the cost of iteration, maintenance, and verification. Please see FLIP doc [2] for details. [1] https://cwiki.apache.org/confluence/display/FLINK/FLIP-295%3A+Support+lazy+initialization+of+catalogs+and+persistence+of+catalog+configurations [2] https://cwiki.apache.org/confluence/display/FLINK/FLIP-436%3A+Introduce+Catalog-related+Syntax Best, Yubin On Tue, Mar 19, 2024 at 9:57 PM Lincoln Lee <lincoln.8...@gmail.com> wrote: > > Hi Yubin, > > Thanks for your quickly response! > > It would be better to support comments just like create `database` and > `table` with comment. > That is, add `String getComment();` to the current `Catalog` interface. > WDYT? > > Best, > Lincoln Lee > > > Yubin Li <lyb5...@gmail.com> 于2024年3月19日周二 21:44写道： > > > Hi Lincoln, > > > > Good catch. Thanks for your suggestions. > > > > I found that the creation statements of database and table both > > support specifying "if not exists". For the sake of syntactic > > consistency and user practicality, We could introduce the '[if not > > exists]' clause to the 'create catalog' statement. > > > > As for the introduction of the `catalog comment` feature, it may > > involve changes to the Catalog structure, which can be left for future > > discussion. > > > > WDYT? Looking forward to your feedback :) > > > > Best, > > Yubin > > > > On Tue, Mar 19, 2024 at 9:06 PM Lincoln Lee <lincoln.8...@gmail.com> > > wrote: > > > > > > Hi Yubin, > > > > > > Big +1 for completing the catalog api! > > > There's a minor addition[1] which does not affect the vote could also be > > > considered. > > > > > > [1] https://issues.apache.org/jira/browse/FLINK-21665 > > > > > > > > > Best, > > > Lincoln Lee > > > > > > > > > Yubin Li <lyb5...@gmail.com> 于2024年3月18日周一 17:44写道： > > > > > > > Hi Jark, > > > > > > > > Thanks for your response, I have updated FLIP-436: Introduce > > > > Catalog-related Syntax [1] as you suggested. > > > > > > > > If there are no more comments within 24 hours, I will start a vote for > > > > this, thanks :) > > > > > > > > Best, > > > > Yubin > > > > > > > > [1] > > > > > > https://cwiki.apache.org/confluence/display/FLINK/FLIP-436%3A+Introduce+Catalog-related+Syntax > > > > > > > > On Mon, Mar 18, 2024 at 4:39 PM Jark Wu <imj...@gmail.com> wrote: > > > > > > > > > > Hi Yubin, > > > > > > > > > > Thanks for the quick response. The suggestion sounds good to me! > > > > > > > > > > Best, > > > > > Jark > > > > > > > > > > On Mon, 18 Mar 2024 at 13:06, Yubin Li <lyb5...@gmail.com> wrote: > > > > > > > > > > > Hi Jark, > > > > > > > > > > > > Good pointing! Thanks for your reply, there are some details to > > align > > > > :) > > > > > > > > > > > > 1. I think the purpose of DESCRIBE CATALOG is to display metadata > > > > > > > information including catalog name, > > > > > > > catalog comment (may be introduced in the future), catalog type, > > and > > > > > > > catalog properties (for example [1]) > > > > > > > > > > > > Adopting { DESC | DESCRIBE } CATALOG [ EXTENDED ] xx as formal > > syntax, > > > > > > Producing rich and compatible results for future needs is very > > > > important. > > > > > > When > > > > > > specifying "extended" in the syntax, it will output the complete > > > > > > information including > > > > > > properties.The complete output example is as follows: > > > > > > > > > > > > > > > > > > +---------------------------------+---------------------------------------------------+ > > > > > > | catalog_description_item | catalog_description_value > > > > | > > > > > > > > > > > > > > > > > > +---------------------------------+---------------------------------------------------+ > > > > > > | Name | cat1 > > > > > > | > > > > > > | Type | > > generic_in_memory > > > > > > | > > > > > > | Comment | > > > > > > | > > > > > > | Properties | ((k1,v1), > > (k2,v2)) > > > > > > | > > > > > > > > > > > > > > > > > > +---------------------------------+---------------------------------------------------+ > > > > > > > > > > > > 2. Could you add support for ALTER CATALOG xxx UNSET ('mykey')? > > This is > > > > > > > also very useful in ALTER TABLE. > > > > > > > > > > > > I found that there is already an ALTER TABLE xxx RESET ('mykey') > > > > syntax [1] > > > > > > now, > > > > > > which will reset the myKey attribute of a certain table to the > > default > > > > > > value. For catalogs, > > > > > > it might be better to use ALTER CATALOG xxx RESET ('mykey') for the > > > > sake of > > > > > > design > > > > > > consistency. > > > > > > > > > > > > WDYT? Looking forward to your suggestions. > > > > > > > > > > > > Best, > > > > > > Yubin > > > > > > > > > > > > [1] > > > > > > > > > > > > > > > > > > https://nightlies.apache.org/flink/flink-docs-master/docs/dev/table/sql/alter/#reset > > > > > > > > > > > > > > > > > > On Mon, Mar 18, 2024 at 11:49 AM Jark Wu <imj...@gmail.com> wrote: > > > > > > > > > > > > > Hi Yubin, > > > > > > > > > > > > > > Thanks for updating the FLIP. The updated version looks good in > > > > general. > > > > > > > I only have 2 minor comments. > > > > > > > > > > > > > > 1. I think the purpose of DESCRIBE CATALOG is to display metadata > > > > > > > information including catalog name, > > > > > > > catalog comment (may be introduced in the future), catalog type, > > and > > > > > > > catalog properties (for example [1]). > > > > > > > Expanding all properties may limit this syntax to include more > > > > metadata > > > > > > > information in the future. > > > > > > > > > > > > > > 2. Could you add support for ALTER CATALOG xxx UNSET ('mykey')? > > This > > > > is > > > > > > > also very useful in ALTER TABLE. > > > > > > > > > > > > > > Best, > > > > > > > Jark > > > > > > > > > > > > > > [1]: > > > > > > > > > > > > > > > > > > > > > > > > > > https://docs.databricks.com/en/sql/language-manual/sql-ref-syntax-aux-describe-schema.html > > > > > > > > > > > > > > > > > > > > > > > > > > > > On Fri, 15 Mar 2024 at 12:06, Yubin Li <lyb5...@gmail.com> > > wrote: > > > > > > > > > > > > > > > Hi Xuyang, > > > > > > > > > > > > > > > > Thank you for pointing this out, The parser part of `describe > > > > catalog` > > > > > > > > syntax > > > > > > > > has indeed been implemented in FLIP-69, and it is not actually > > > > > > available. > > > > > > > > we can complete the syntax in this FLIP [1]. I have updated > > the > > > > doc :) > > > > > > > > > > > > > > > > Best, > > > > > > > > Yubin > > > > > > > > > > > > > > > > [1] > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > https://cwiki.apache.org/confluence/display/FLINK/FLIP-436%3A+Introduce+Catalog-related+Syntax > > > > > > > > > > > > > > > > On Fri, Mar 15, 2024 at 10:12 AM Xuyang <xyzhong...@163.com> > > > > wrote: > > > > > > > > > > > > > > > > > Hi, Yubin. Big +1 for this Flip. I just left one minor > > comment > > > > > > > following. > > > > > > > > > > > > > > > > > > > > > > > > > > > I found that although flink has not supported syntax > > 'DESCRIBE > > > > > > CATALOG > > > > > > > > > catalog_name' currently, it was already > > > > > > > > > discussed in flip-69[1], do we need to restart discussing it? > > > > > > > > > I don't have a particular preference regarding the restart > > > > > > discussion. > > > > > > > It > > > > > > > > > seems that there is no difference on this syntax > > > > > > > > > in FLIP-436, so maybe it would be best to refer back to > > FLIP-69 > > > > in > > > > > > this > > > > > > > > > FLIP. WDYT? > > > > > > > > > > > > > > > > > > > > > > > > > > > [1] > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > https://cwiki.apache.org/confluence/display/FLINK/FLIP-69%3A+Flink+SQL+DDL+Enhancement > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > > > > > > > > > > > > > > > Best！ > > > > > > > > > Xuyang > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > At 2024-03-15 02:49:59, "Yubin Li" <lyb5...@gmail.com> > > wrote: > > > > > > > > > >Hi folks, > > > > > > > > > > > > > > > > > > > >Thank you all for your input, it really makes sense to > > introduce > > > > > > > missing > > > > > > > > > >catalog-related SQL syntaxes under this FLIP, and I have > > > > changed the > > > > > > > > > >title of doc to "FLIP-436: Introduce Catalog-related > > Syntax". > > > > > > > > > > > > > > > > > > > >After comprehensive consideration, the following syntaxes > > > > should be > > > > > > > > > >introduced, more suggestions are welcome :) > > > > > > > > > > > > > > > > > > > >> 1. SHOW CREATE CATALOG catalog_name > > > > > > > > > >> 2. DESCRIBE/DESC CATALOG catalog_name > > > > > > > > > >> 3. ALTER CATALOG catalog_name SET (key1=val1, key2=val2, > > ...) > > > > > > > > > > > > > > > > > > > >Regarding the `alter catalog` syntax format, I refer to the > > > > current > > > > > > > > design > > > > > > > > > >of `alter database`. > > > > > > > > > > > > > > > > > > > >Given that CatalogManager already provides catalog > > operations > > > > such > > > > > > as > > > > > > > > > >create, get, and unregister, and in order to facilitate > > future > > > > > > > > > >implementation > > > > > > > > > >of audit tracking, I propose to introduce the alterCatalog() > > > > > > function > > > > > > > in > > > > > > > > > >CatalogManager. WDYT? > > > > > > > > > > > > > > > > > > > >Please see details in FLIP doc [1] . > > > > > > > > > > > > > > > > > > > >Best, > > > > > > > > > >Yubin > > > > > > > > > > > > > > > > > > > >[1] > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > https://cwiki.apache.org/confluence/display/FLINK/FLIP-436%3A+Introduce+Catalog-related+Syntax > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >On Thu, Mar 14, 2024 at 11:07 PM Leonard Xu < > > xbjt...@gmail.com> > > > > > > > wrote: > > > > > > > > > > > > > > > > > > > >> Hi Yubin, > > > > > > > > > >> > > > > > > > > > >> Thanks for driving the discussion, generally +1 for the > > FLIP, > > > > big > > > > > > +1 > > > > > > > > to > > > > > > > > > >> finalize the whole catalog syntax story in one FLIP, > > > > > > > > > >> thus I want to jump into the discussion again after you > > > > completed > > > > > > > the > > > > > > > > > >> whole catalog syntax story. > > > > > > > > > >> > > > > > > > > > >> Best, > > > > > > > > > >> Leonard > > > > > > > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > > > > >> > 2024年3月14日 下午8:39，Roc Marshal <flin...@126.com> 写道： > > > > > > > > > >> > > > > > > > > > > >> > Hi, Yubin > > > > > > > > > >> > > > > > > > > > > >> > > > > > > > > > > >> > Thank you for initiating this discussion! +1 for the > > > > proposal. > > > > > > > > > >> > > > > > > > > > > >> > > > > > > > > > > >> > > > > > > > > > > >> > > > > > > > > > > >> > > > > > > > > > > >> > > > > > > > > > > >> > Best, > > > > > > > > > >> > Yuepeng Pan > > > > > > > > > >> > > > > > > > > > > >> > > > > > > > > > > >> > > > > > > > > > > >> > > > > > > > > > > >> > > > > > > > > > > >> > > > > > > > > > > >> > > > > > > > > > > >> > > > > > > > > > > >> > > > > > > > > > > >> > At 2024-03-14 18:57:35, "Ferenc Csaky" > > > > > > <ferenc.cs...@pm.me.INVALID > > > > > > > > > > > > > > > > > >> wrote: > > > > > > > > > >> >> Hi Yubin, > > > > > > > > > >> >> > > > > > > > > > >> >> Thank you for initiating this discussion! +1 for the > > > > proposal. > > > > > > > > > >> >> > > > > > > > > > >> >> I also think it makes sense to group the missing > > catalog > > > > > > related > > > > > > > > > >> >> SQL syntaxes under this FLIP. > > > > > > > > > >> >> > > > > > > > > > >> >> Looking forward to these features! > > > > > > > > > >> >> > > > > > > > > > >> >> Best, > > > > > > > > > >> >> Ferenc > > > > > > > > > >> >> > > > > > > > > > >> >> > > > > > > > > > >> >> > > > > > > > > > >> >> > > > > > > > > > >> >> On Thursday, March 14th, 2024 at 08:31, Jane Chan < > > > > > > > > > >> qingyue....@gmail.com> wrote: > > > > > > > > > >> >> > > > > > > > > > >> >>> > > > > > > > > > >> >>> > > > > > > > > > >> >>> Hi Yubin, > > > > > > > > > >> >>> > > > > > > > > > >> >>> Thanks for leading the discussion. I'm +1 for the > > FLIP. > > > > > > > > > >> >>> > > > > > > > > > >> >>> As Jark said, it's a good opportunity to enhance the > > > > syntax > > > > > > for > > > > > > > > > Catalog > > > > > > > > > >> >>> from a more comprehensive perspective. So, I suggest > > > > expanding > > > > > > > the > > > > > > > > > >> scope of > > > > > > > > > >> >>> this FLIP by focusing on the mechanism instead of one > > use > > > > case > > > > > > > to > > > > > > > > > >> enhance > > > > > > > > > >> >>> the overall functionality. WDYT? > > > > > > > > > >> >>> > > > > > > > > > >> >>> Best, > > > > > > > > > >> >>> Jane > > > > > > > > > >> >>> > > > > > > > > > >> >>> On Thu, Mar 14, 2024 at 11:38 AM Hang Ruan > > > > > > > ruanhang1...@gmail.com > > > > > > > > > >> wrote: > > > > > > > > > >> >>> > > > > > > > > > >> >>>> Hi, Yubin. > > > > > > > > > >> >>>> > > > > > > > > > >> >>>> Thanks for the FLIP. +1 for it. > > > > > > > > > >> >>>> > > > > > > > > > >> >>>> Best, > > > > > > > > > >> >>>> Hang > > > > > > > > > >> >>>> > > > > > > > > > >> >>>> Yubin Li lyb5...@gmail.com 于2024年3月14日周四 10:15写道： > > > > > > > > > >> >>>> > > > > > > > > > >> >>>>> Hi Jingsong, Feng, and Jeyhun > > > > > > > > > >> >>>>> > > > > > > > > > >> >>>>> Thanks for your support and feedback! > > > > > > > > > >> >>>>> > > > > > > > > > >> >>>>>> However, could we add a new method > > > > `getCatalogDescriptor()` > > > > > > > to > > > > > > > > > >> >>>>>> CatalogManager instead of directly exposing > > > > CatalogStore? > > > > > > > > > >> >>>>> > > > > > > > > > >> >>>>> Good point, Besides the audit tracking issue, The > > > > proposed > > > > > > > > feature > > > > > > > > > >> >>>>> only requires `getCatalogDescriptor()` function. > > > > Exposing > > > > > > > > > components > > > > > > > > > >> >>>>> with excessive functionality will bring unnecessary > > > > risks, I > > > > > > > > have > > > > > > > > > >> made > > > > > > > > > >> >>>>> modifications in the FLIP doc [1]. Thank Feng :) > > > > > > > > > >> >>>>> > > > > > > > > > >> >>>>>> Showing the SQL parser implementation in the FLIP > > for > > > > the > > > > > > SQL > > > > > > > > > syntax > > > > > > > > > >> >>>>>> might be a bit confusing. Also, the formal > > definition > > > > is > > > > > > > > missing > > > > > > > > > for > > > > > > > > > >> >>>>>> this SQL clause. > > > > > > > > > >> >>>>> > > > > > > > > > >> >>>>> Thank Jeyhun for pointing it out :) I have updated > > the > > > > doc > > > > > > > [1] . > > > > > > > > > >> >>>>> > > > > > > > > > >> >>>>> [1] > > > > > > > > > >> >>>> > > > > > > > > > >> >>>> > > > > > > > > > >> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=296290756 > > > > > > > > > >> >>>> > > > > > > > > > >> >>>>> Best, > > > > > > > > > >> >>>>> Yubin > > > > > > > > > >> >>>>> > > > > > > > > > >> >>>>> On Thu, Mar 14, 2024 at 2:18 AM Jeyhun Karimov > > > > > > > > > je.kari...@gmail.com > > > > > > > > > >> >>>>> wrote: > > > > > > > > > >> >>>>> > > > > > > > > > >> >>>>>> Hi Yubin, > > > > > > > > > >> >>>>>> > > > > > > > > > >> >>>>>> Thanks for the proposal. +1 for it. > > > > > > > > > >> >>>>>> I have one comment: > > > > > > > > > >> >>>>>> > > > > > > > > > >> >>>>>> I would like to see the SQL syntax for the proposed > > > > > > > statement. > > > > > > > > > >> Showing > > > > > > > > > >> >>>>>> the > > > > > > > > > >> >>>>>> SQL parser implementation in the FLIP > > > > > > > > > >> >>>>>> for the SQL syntax might be a bit confusing. Also, > > the > > > > > > formal > > > > > > > > > >> >>>>>> definition > > > > > > > > > >> >>>>>> is > > > > > > > > > >> >>>>>> missing for this SQL clause. > > > > > > > > > >> >>>>>> Maybe something like [1] might be useful. WDYT? > > > > > > > > > >> >>>>>> > > > > > > > > > >> >>>>>> Regards, > > > > > > > > > >> >>>>>> Jeyhun > > > > > > > > > >> >>>>>> > > > > > > > > > >> >>>>>> [1] > > > > > > > > > >> >>>> > > > > > > > > > >> >>>> > > > > > > > > > >> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > https://github.com/apache/flink/blob/0da60ca1a4754f858cf7c52dd4f0c97ae0e1b0cb/docs/content/docs/dev/table/sql/show.md?plain=1#L620-L632 > > > > > > > > > >> >>>> > > > > > > > > > >> >>>>>> On Wed, Mar 13, 2024 at 3:28 PM Feng Jin > > > > > > > jinfeng1...@gmail.com > > > > > > > > > >> >>>>>> wrote: > > > > > > > > > >> >>>>>> > > > > > > > > > >> >>>>>>> Hi Yubin > > > > > > > > > >> >>>>>>> > > > > > > > > > >> >>>>>>> Thank you for initiating this FLIP. > > > > > > > > > >> >>>>>>> > > > > > > > > > >> >>>>>>> I have just one minor question: > > > > > > > > > >> >>>>>>> > > > > > > > > > >> >>>>>>> I noticed that we added a new function > > > > `getCatalogStore` > > > > > > to > > > > > > > > > expose > > > > > > > > > >> >>>>>>> CatalogStore, and it seems fine. > > > > > > > > > >> >>>>>>> However, could we add a new method > > > > > > `getCatalogDescriptor()` > > > > > > > to > > > > > > > > > >> >>>>>>> CatalogManager instead of directly exposing > > > > CatalogStore? > > > > > > > > > >> >>>>>>> By only providing the `getCatalogDescriptor()` > > > > interface, > > > > > > it > > > > > > > > > may be > > > > > > > > > >> >>>>>>> easier > > > > > > > > > >> >>>>>>> for us to implement audit tracking in > > CatalogManager > > > > in > > > > > > the > > > > > > > > > future. > > > > > > > > > >> >>>>>>> WDYT ? > > > > > > > > > >> >>>>>>> Although we have only collected some modified > > events > > > > at > > > > > > the > > > > > > > > > >> >>>>>>> moment.[1] > > > > > > > > > >> >>>>>>> > > > > > > > > > >> >>>>>>> [1]. > > > > > > > > > >> >>>> > > > > > > > > > >> >>>> > > > > > > > > > >> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > https://cwiki.apache.org/confluence/display/FLINK/FLIP-294%3A+Support+Customized+Catalog+Modification+Listener > > > > > > > > > >> >>>> > > > > > > > > > >> >>>>>>> Best, > > > > > > > > > >> >>>>>>> Feng > > > > > > > > > >> >>>>>>> > > > > > > > > > >> >>>>>>> On Wed, Mar 13, 2024 at 5:31 PM Jingsong Li > > > > > > > > > jingsongl...@gmail.com > > > > > > > > > >> >>>>>>> wrote: > > > > > > > > > >> >>>>>>> > > > > > > > > > >> >>>>>>>> +1 for this. > > > > > > > > > >> >>>>>>>> > > > > > > > > > >> >>>>>>>> We are missing a series of catalog related > > syntaxes. > > > > > > > > > >> >>>>>>>> Especially after the introduction of catalog > > store. > > > > [1] > > > > > > > > > >> >>>>>>>> > > > > > > > > > >> >>>>>>>> [1] > > > > > > > > > >> >>>> > > > > > > > > > >> >>>> > > > > > > > > > >> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > https://cwiki.apache.org/confluence/display/FLINK/FLIP-295%3A+Support+lazy+initialization+of+catalogs+and+persistence+of+catalog+configurations > > > > > > > > > >> >>>> > > > > > > > > > >> >>>>>>>> Best, > > > > > > > > > >> >>>>>>>> Jingsong > > > > > > > > > >> >>>>>>>> > > > > > > > > > >> >>>>>>>> On Wed, Mar 13, 2024 at 5:09 PM Yubin Li > > > > > > lyb5...@gmail.com > > > > > > > > > >> >>>>>>>> wrote: > > > > > > > > > >> >>>>>>>> > > > > > > > > > >> >>>>>>>>> Hi devs, > > > > > > > > > >> >>>>>>>>> > > > > > > > > > >> >>>>>>>>> I'd like to start a discussion about FLIP-436: > > > > Introduce > > > > > > > > "SHOW > > > > > > > > > >> >>>>>>>>> CREATE > > > > > > > > > >> >>>>>>>>> CATALOG" Syntax [1]. > > > > > > > > > >> >>>>>>>>> > > > > > > > > > >> >>>>>>>>> At present, the `SHOW CREATE TABLE` statement > > > > provides > > > > > > > > strong > > > > > > > > > >> >>>>>>>>> support > > > > > > > > > >> >>>>>>>>> for > > > > > > > > > >> >>>>>>>>> users to easily > > > > > > > > > >> >>>>>>>>> reuse created tables. However, despite the > > > > increasing > > > > > > > > > importance > > > > > > > > > >> >>>>>>>>> of the > > > > > > > > > >> >>>>>>>>> `Catalog` in user's > > > > > > > > > >> >>>>>>>>> business, there is no similar statement for > > users to > > > > > > use. > > > > > > > > > >> >>>>>>>>> > > > > > > > > > >> >>>>>>>>> According to the online discussion in > > FLINK-24939 > > > > [2] > > > > > > with > > > > > > > > > Jark > > > > > > > > > >> >>>>>>>>> Wu > > > > > > > > > >> >>>>>>>>> and > > > > > > > > > >> >>>>>>>>> Feng > > > > > > > > > >> >>>>>>>>> Jin, since `CatalogStore` > > > > > > > > > >> >>>>>>>>> has been introduced in FLIP-295 [3], we could > > use > > > > this > > > > > > > > > component > > > > > > > > > >> >>>>>>>>> to > > > > > > > > > >> >>>>>>>>> implement such a long-awaited > > > > > > > > > >> >>>>>>>>> feature, Please refer to the document [1] for > > > > > > > implementation > > > > > > > > > >> >>>>>>>>> details. > > > > > > > > > >> >>>>>>>>> > > > > > > > > > >> >>>>>>>>> examples as follows: > > > > > > > > > >> >>>>>>>>> > > > > > > > > > >> >>>>>>>>> Flink SQL> create catalog cat2 WITH > > > > > > > > > ('type'='generic_in_memory', > > > > > > > > > >> >>>>>>>>> > > > > > > > > > >> >>>>>>>>>> 'default-database'='db'); > > > > > > > > > >> >>>>>>>>>> [INFO] Execute statement succeeded. > > > > > > > > > >> >>>>>>>>>> Flink SQL> show create catalog cat2; > > > > > > > > > >> >>>> > > > > > > > > > >> >>>> > > > > > > > > > >> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > +----------------------------------------------------------------------------------------+ > > > > > > > > > >> >>>> > > > > > > > > > >> >>>>>>>>>> | result | > > > > > > > > > >> >>>> > > > > > > > > > >> >>>> > > > > > > > > > >> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > +----------------------------------------------------------------------------------------+ > > > > > > > > > >> >>>> > > > > > > > > > >> >>>>>>>>>> | CREATE CATALOG `cat2` WITH ( > > > > > > > > > >> >>>>>>>>>> 'default-database' = 'db', > > > > > > > > > >> >>>>>>>>>> 'type' = 'generic_in_memory' > > > > > > > > > >> >>>>>>>>>> ) > > > > > > > > > >> >>>>>>>>>> | > > > > > > > > > >> >>>> > > > > > > > > > >> >>>> > > > > > > > > > >> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > +----------------------------------------------------------------------------------------+ > > > > > > > > > >> >>>> > > > > > > > > > >> >>>>>>>>>> 1 row in set > > > > > > > > > >> >>>>>>>>> > > > > > > > > > >> >>>>>>>>> Looking forward to hearing from you, thanks! > > > > > > > > > >> >>>>>>>>> > > > > > > > > > >> >>>>>>>>> Best regards, > > > > > > > > > >> >>>>>>>>> Yubin > > > > > > > > > >> >>>>>>>>> > > > > > > > > > >> >>>>>>>>> [1] > > > > > > > > > >> >>>> > > > > > > > > > >> >>>> > > > > > > > > > >> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=296290756 > > > > > > > > > >> >>>> > > > > > > > > > >> >>>>>>>>> [2] > > > > https://issues.apache.org/jira/browse/FLINK-24939 > > > > > > > > > >> >>>>>>>>> [3] > > > > > > > > > >> >>>> > > > > > > > > > >> >>>> > > > > > > > > > >> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > https://cwiki.apache.org/confluence/display/FLINK/FLIP-295%3A+Support+lazy+initialization+of+catalogs+and+persistence+of+catalog+configurations > > > > > > > > > >> > > > > > > > > > >> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
