Hi Alireza,
Like Stamatis said, implement computeSelfCost() method or implement
getStatistic in BeamCalciteTable.
Just fyi, there are some discussion in
https://github.com/apache/beam/pull/6656
Best,
Kai
On Tue, May 21, 2019 at 3:27 PM Alireza Samadian
wrote:
> Thank you. That works.
>
> Best,
Thank you. That works.
Best,
Alireza
On Tue, May 21, 2019 at 3:06 PM Stamatis Zampetakis
wrote:
> Hi Alireza,
>
> I suppose you mainly need count estimates for base tables.
> One way to provide this information is by implementing the Table interface
> [1] and providing an appropriate implementa
Hi Alireza,
I suppose you mainly need count estimates for base tables.
One way to provide this information is by implementing the Table interface
[1] and providing an appropriate implementation for the getStatistic()
method.
Another way would be to extend TableScan [2] operator and provide another
Hi,
I'm working on Beam SQL and we are using Apache Calcite for our query
parsing and optimization. We are trying to use row count estimates for
Volcano Optimizer. Currently, Calcite returns row count estimate of 100 for
every table.
It seems the cost estimate comes from bunch of handlers in
org.a
