Il ven 10 nov 2017, 19:42 Edmon Begoli <[email protected]> ha scritto:
> Good observation. I will create a JIRA issue for that, and maybe see if we > could put something together. > Thank you all. I will check into code, and share my thoughts/questions, hopefully this will be useful to build a first guide Enrico > On Fri, Nov 10, 2017 at 13:38 Luis Fernando Kauer > <[email protected]> wrote: > > > Sorry, > > My knowledge hasn't reached that far. > > Currently the tutorial and example code is mostly for creating new > > adapters. > > I think we need tutorial, documentation and example code to work directly > > with the planner, because it is a lot harder. > > Regards, > > Luis Fernando > > Em quinta-feira, 9 de novembro de 2017 06:52:26 BRST, Enrico Olivelli > < > > [email protected]> escreveu: > > > > I am going to use Calcite Planner inside my DBMS. > > I would like to understand which objects can be reused and which objects > > are treated in a dynamic fashion. > > > > Planner object, is this cachable ? I see i is not stateless. Is it better > > to alwayes create a new instance or could it be reclycled ? > > > > Table statistics: > > are them evaluated at every time a query is to be planned ? > > at least the table size > > > > Schemas: > > in a live system schema changes, but as far as I have undestood the > Schema > > is part of Framework config. > > Which is the best strategy ? to drop the current framework config and all > > cached objects in case of a DDL command ? > > > > Execution Plans: > > Are RelNodes cachable ? I see they have strong references to the planner > > which built the object. > > I am looking to a cache like QUERY -> PhisycalPlan > > > > Regards > > Enrico > > > -- -- Enrico Olivelli
