Wow! Thanks Fabian, this looks fantastic! On Thu, Jan 7, 2016 at 4:35 PM, Stephan Ewen <se...@apache.org> wrote:
> Super, thanks for that detailed effort, Fabian! > > On Thu, Jan 7, 2016 at 3:40 PM, Matthias J. Sax <mj...@apache.org> wrote: > > > Pretty cool! > > > > On 01/07/2016 03:05 PM, Fabian Hueske 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_-m1rQfgA6Ouj1oYsfqRjPcp1h2TVqdI/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 > > > > > > > >
