Cool stuff! SQL coming up next? ;-)
On Tue, Mar 29, 2016 at 1:39 PM, Maximilian Michels <m...@apache.org> wrote: > Yeah! I'm a little late to the party but exciting stuff! :) > > On Fri, Mar 18, 2016 at 3:15 PM, Vasiliki Kalavri < > vasilikikala...@gmail.com > > wrote: > > > Hi all, > > > > tableOnCalcite has been merged to master :) > > > > Cheers, > > -Vasia. > > > > On 17 March 2016 at 11:11, Fabian Hueske <fhue...@gmail.com> wrote: > > > > > Thanks for the initiative Vasia! > > > I went over the diff and didn't find anything crucial. > > > > > > I would like to do another pass over the tests though and improve the > > > exceptions for invalid joins before merging. > > > Will open a PR later today. > > > > > > 2016-03-16 21:17 GMT+01:00 Vasiliki Kalavri <vasilikikala...@gmail.com > >: > > > > > > > Yes, the current state corresponds to Task 1. PR #1770 corresponds to > > > Task > > > > 5. Task 6 should come right after :) > > > > > > > > -V. > > > > > > > > On 16 March 2016 at 20:35, Robert Metzger <rmetz...@apache.org> > wrote: > > > > > > > > > Cool, this is great news! > > > > > So "Task 1" from the document [1] is done with the merge? And PR > > #1770 > > > is > > > > > going towards "Task 6". > > > > > I think good support for Stream SQL is a very interesting new > feature > > > for > > > > > Flink. > > > > > > > > > > [1] > > > > > > > > > > > > > > > > > > > > https://docs.google.com/document/d/1TLayJNOTBle_-m1rQfgA6Ouj1oYsfqRjPcp1h2TVqdI/edit#heading=h.28dvisn56su0 > > > > > > > > > > On Wed, Mar 16, 2016 at 6:17 PM, Vasiliki Kalavri < > > > > > vasilikikala...@gmail.com > > > > > > wrote: > > > > > > > > > > > Hello everyone, > > > > > > > > > > > > We are happy to announce that the "tableOnCalcite" branch is > > finally > > > > > ready > > > > > > to be merged. > > > > > > It essentially provides the existing functionality of the Table > > API, > > > > but > > > > > > now the translation happens through Apache Calcite. > > > > > > You can find the changes rebased on top of the current master in > > [1]. > > > > > > We have removed the prototype streaming Table API functionality, > > > which > > > > > will > > > > > > be added back once PR [2] is merged. > > > > > > > > > > > > We'll go through the changes once more and, if no objections, we > > > would > > > > > like > > > > > > to go ahead and merge this. > > > > > > > > > > > > Cheers, > > > > > > -Vasia. > > > > > > > > > > > > [1]: https://github.com/vasia/flink/tree/merge-table > > > > > > [2]: https://github.com/apache/flink/pull/1770 > > > > > > > > > > > > > > > > > > On 15 January 2016 at 10:59, Fabian Hueske <fhue...@gmail.com> > > > wrote: > > > > > > > > > > > > > Hi everybody, > > > > > > > > > > > > > > as previously announced, I pushed a feature branch called > > > > > > "tableOnCalcite" > > > > > > > to the Flink repository. > > > > > > > We will use this branch to work on FLINK-3221 and its > sub-issues. > > > > > > > > > > > > > > Cheers, Fabian > > > > > > > > > > > > > > 2016-01-11 18:29 GMT+01:00 Fabian Hueske <fhue...@gmail.com>: > > > > > > > > > > > > > > > We haven't defined the StreamSQL syntax yet (and I think it > > will > > > > take > > > > > > > some > > > > > > > > time until we are at that point). > > > > > > > > So we are quite flexible with both featurs. > > > > > > > > > > > > > > > > Let's keep this opportunity in mind and coordinate when > before > > > > making > > > > > > > > decisions about CEP or StreamSQL. > > > > > > > > > > > > > > > > Fabian > > > > > > > > > > > > > > > > 2016-01-11 17:29 GMT+01:00 Till Rohrmann < > trohrm...@apache.org > > >: > > > > > > > > > > > > > > > >> First of all, it's a great design document. Looking forward > > > having > > > > > > > stream > > > > > > > >> SQL in the foreseeable future :-) > > > > > > > >> > > > > > > > >> I think it is a good idea to consolidate stream SQL and CEP > in > > > the > > > > > > long > > > > > > > >> run. CEP's additional features compared to SQL boil down to > > > > pattern > > > > > > > >> detection. Once we have this, it should be only a question > of > > > > > defining > > > > > > > the > > > > > > > >> SQL syntax for event patterns in order to integrate CEP with > > > > stream > > > > > > SQL. > > > > > > > >> Oracle has already defined an extension [1] to detect > patterns > > > in > > > > a > > > > > > set > > > > > > > of > > > > > > > >> table rows. This or Esper's event processing language (EPL) > > [2] > > > > > could > > > > > > > be a > > > > > > > >> good starting point. > > > > > > > >> > > > > > > > >> [1] > > > > > https://docs.oracle.com/database/121/DWHSG/pattern.htm#DWHSG8959 > > > > > > > >> [2] > > > > > > > http://www.espertech.com/esper/release-5.2.0/esper-reference/html/ > > > > > > > >> > > > > > > > >> Cheers, > > > > > > > >> Till > > > > > > > >> > > > > > > > >> On Mon, Jan 11, 2016 at 10:12 AM, Fabian Hueske < > > > > fhue...@gmail.com> > > > > > > > >> wrote: > > > > > > > >> > > > > > > > >> > Thanks for the feedback! > > > > > > > >> > > > > > > > > >> > We will start the SQL effort with putting the existing > > (batch) > > > > > Table > > > > > > > >> API on > > > > > > > >> > top of Apache Calcite. > > > > > > > >> > From there we continue to add streaming support for the > > Table > > > > API > > > > > > > >> before we > > > > > > > >> > put a StreamSQL interface on top. > > > > > > > >> > > > > > > > > >> > Consolidating the efforts with the CEP library sounds > like a > > > > good > > > > > > idea > > > > > > > >> to > > > > > > > >> > me. > > > > > > > >> > Maybe it can be nicely integrated with the streaming table > > API > > > > and > > > > > > > >> later as > > > > > > > >> > well with the StreamSQL interface (the StreamSQL dialect > is > > > not > > > > > > > defined > > > > > > > >> > yet). > > > > > > > >> > > > > > > > > >> > @Till: What do you think about adding CEP features to the > > > Table > > > > > API. > > > > > > > >> From > > > > > > > >> > the CEP design doc, it looks like we need to add a pattern > > > > > matching > > > > > > > >> > operator in addition to the window features that we need > to > > > add > > > > > for > > > > > > > >> > streaming Table API in any case. > > > > > > > >> > > > > > > > > >> > Best, Fabian > > > > > > > >> > > > > > > > > >> > 2016-01-11 4:03 GMT+01:00 Jiangsong (Hi) < > > > > hi.jiangs...@huawei.com > > > > > >: > > > > > > > >> > > > > > > > > >> > > I suggest refering to Esper EPL[1], which is a > > SQL-standard > > > > > > language > > > > > > > >> > > extend to offering a cluster of window, pattern > matching. > > > EPL > > > > > can > > > > > > > >> both > > > > > > > >> > > support Streaming SQL and CEP with one unified syntax. > > > > > > > >> > > > > > > > > > >> > > [1] > > > > > > > >> > > > > > > > > > >> > > > > > > > > >> > > > > > > > > > > > > > > > > > > > > > > > > > > > > http://www.espertech.com/esper/release-5.2.0/esper-reference/pdf/esper_reference.pdf > > > > > > > >> > > (Chapter 5. EPL Reference: Clauses) > > > > > > > >> > > > > > > > > > >> > > > > > > > > > >> > > Regards > > > > > > > >> > > Song > > > > > > > >> > > > > > > > > > >> > > > > > > > > > >> > > -----邮件原件----- > > > > > > > >> > > 发件人: Chiwan Park [mailto:chiwanp...@apache.org] > > > > > > > >> > > 发送时间: 2016年1月11日 10:31 > > > > > > > >> > > 收件人: dev@flink.apache.org > > > > > > > >> > > 主题: Re: Effort to add SQL / StreamSQL to Flink > > > > > > > >> > > > > > > > > > >> > > We still don’t have a concensus about the streaming SQL > > and > > > > CEP > > > > > > > >> library > > > > > > > >> > on > > > > > > > >> > > Flink. Some people want to merge these two libraries. > > Maybe > > > we > > > > > > have > > > > > > > to > > > > > > > >> > > discuss about this in mailing list. > > > > > > > >> > > > > > > > > > >> > > > On Jan 11, 2016, at 10:53 AM, Nick Dimiduk < > > > > > ndimi...@gmail.com> > > > > > > > >> wrote: > > > > > > > >> > > > > > > > > > > >> > > > What's the relationship between the streaming SQL > > proposed > > > > > here > > > > > > > and > > > > > > > >> > > > the CEP syntax proposed earlier in the week? > > > > > > > >> > > > > > > > > > > >> > > > On Sunday, January 10, 2016, Henry Saputra < > > > > > > > henry.sapu...@gmail.com > > > > > > > >> > > > > > > > > >> > > wrote: > > > > > > > >> > > > > > > > > > > >> > > >> Awesome! Thanks for the reply, Fabian. > > > > > > > >> > > >> > > > > > > > >> > > >> - Henry > > > > > > > >> > > >> > > > > > > > >> > > >> On Sunday, January 10, 2016, Fabian Hueske < > > > > > fhue...@gmail.com > > > > > > > >> > > >> <javascript:;>> wrote: > > > > > > > >> > > >> > > > > > > > >> > > >>> Hi Henry, > > > > > > > >> > > >>> > > > > > > > >> > > >>> There is > > > https://issues.apache.org/jira/browse/FLINK-2099 > > > > > > and a > > > > > > > >> few > > > > > > > >> > > >>> subissues. > > > > > > > >> > > >>> I'll reorganize these and add more issues for the > > tasks > > > > > > > described > > > > > > > >> in > > > > > > > >> > > >>> the design document in the next days. > > > > > > > >> > > >>> > > > > > > > >> > > >>> Thanks, Fabian > > > > > > > >> > > >>> > > > > > > > >> > > >>> 2016-01-10 2:45 GMT+01:00 Henry Saputra < > > > > > > > henry.sapu...@gmail.com > > > > > > > >> > > >> <javascript:;> > > > > > > > >> > > >>> <javascript:;>>: > > > > > > > >> > > >>> > > > > > > > >> > > >>>> HI Fabian, > > > > > > > >> > > >>>> > > > > > > > >> > > >>>> Have you created JIRA ticket to keep track of this > > new > > > > > > feature? > > > > > > > >> > > >>>> > > > > > > > >> > > >>>> - Henry > > > > > > > >> > > >>>> > > > > > > > >> > > >>>> On Thu, Jan 7, 2016 at 6:05 AM, Fabian Hueske < > > > > > > > fhue...@gmail.com > > > > > > > >> > > >> <javascript:;> > > > > > > > >> > > >>> <javascript:;>> wrote: > > > > > > > >> > > >>>>> Hi everybody, > > > > > > > >> > > >>>>> > > > > > > > >> > > >>>>> in the last days, Timo and I refined the design > > > document > > > > > for > > > > > > > >> > > >>>>> adding a > > > > > > > >> > > >>>> SQL / > > > > > > > >> > > >>>>> StreamSQL interface on top of Flink that was > started > > > by > > > > > > > Stephan. > > > > > > > >> > > >>>>> > > > > > > > >> > > >>>>> The document proposes an architecture that is > > centered > > > > > > around > > > > > > > >> > > >>>>> Apache Calcite. Calcite is an Apache top-level > > project > > > > and > > > > > > > >> > > >>>>> includes a SQL > > > > > > > >> > > >>>> parser, > > > > > > > >> > > >>>>> a semantic validator for relational queries, and a > > > rule- > > > > > and > > > > > > > >> > > >> cost-based > > > > > > > >> > > >>>>> relational optimizer. Calcite is used by Apache > Hive > > > and > > > > > > > Apache > > > > > > > >> > > >>>>> Drill (among other projects). In a nutshell, the > > plan > > > is > > > > > to > > > > > > > >> > > >>>>> translate Table > > > > > > > >> > > >>> API > > > > > > > >> > > >>>>> and SQL queries into Calcite's relational > expression > > > > > trees, > > > > > > > >> > > >>>>> optimize > > > > > > > >> > > >>>> these > > > > > > > >> > > >>>>> trees, and translate them into DataSet and > > DataStream > > > > > > > >> programs.The > > > > > > > >> > > >>>> document > > > > > > > >> > > >>>>> breaks down the work into several tasks and > > subtasks. > > > > > > > >> > > >>>>> > > > > > > > >> > > >>>>> Please review the design document and comment. > > > > > > > >> > > >>>>> > > > > > > > >> > > >>>>> -- > > > > > > > > >> > > >>>>> > > > > > > > >> > > >>>> > > > > > > > >> > > >>> > > > > > > > >> > > >> > > > > > > > >> > > > > > > > https://docs.google.com/document/d/1TLayJNOTBle_-m1rQfgA6Ouj1oYsfqRjP > > > > > > > >> > > >> cp1h2TVqdI/edit?usp=sharing > > > > > > > >> > > >>>>> > > > > > > > >> > > >>>>> Unless there are major concerns with the design, > > Timo > > > > and > > > > > I > > > > > > > want > > > > > > > >> > > >>>>> to > > > > > > > >> > > >>> start > > > > > > > >> > > >>>>> next week to move the current Table API on top of > > > Apache > > > > > > > Calcite > > > > > > > >> > > >> (Task > > > > > > > >> > > >>> 1 > > > > > > > >> > > >>>> in > > > > > > > >> > > >>>>> the document). The goal of this task is to have > the > > > same > > > > > > > >> > > >> functionality > > > > > > > >> > > >>> as > > > > > > > >> > > >>>>> currently, but with Calcite in the translation > > > process. > > > > > This > > > > > > > is > > > > > > > >> a > > > > > > > >> > > >>>> blocking > > > > > > > >> > > >>>>> task that we hope to complete soon. Afterwards, we > > can > > > > > > > >> > > >>>>> independently > > > > > > > >> > > >>> work > > > > > > > >> > > >>>>> on different aspects such as extending the Table > > API, > > > > > > adding a > > > > > > > >> SQL > > > > > > > >> > > >>>>> interface (basically just a parser), integration > > with > > > > > > external > > > > > > > >> > > >>>>> data sources, better code generation, optimization > > > > rules, > > > > > > > >> > > >>>>> streaming > > > > > > > >> > > >> support > > > > > > > >> > > >>>> for > > > > > > > >> > > >>>>> the Table API, StreamSQL, etc.. > > > > > > > >> > > >>>>> > > > > > > > >> > > >>>>> Timo and I plan to work on a WIP branch to > implement > > > > Task > > > > > 1 > > > > > > > and > > > > > > > >> > > >>>>> merge > > > > > > > >> > > >>> it > > > > > > > >> > > >>>> to > > > > > > > >> > > >>>>> the master branch once the task is completed. Of > > > course, > > > > > > > >> everybody > > > > > > > >> > > >>>>> is welcome to contribute to this effort. Please > let > > us > > > > > know > > > > > > > such > > > > > > > >> > > >>>>> that we > > > > > > > >> > > >>> can > > > > > > > >> > > >>>>> coordinate our efforts. > > > > > > > >> > > >>>>> > > > > > > > >> > > >>>>> Thanks, > > > > > > > >> > > >>>>> Fabian > > > > > > > >> > > > > > > > > > >> > > Regards, > > > > > > > >> > > Chiwan Park > > > > > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > > > >> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
