Hi Lekshmi,
I am one of the members in Edmon Begoli’s team who did preliminary work on
comparison Calcite with conventional RDBMS, especially postgresql.
The major challenge that we’ve identified is that many benchmarks (e.g., TPC-H,
TPC-DS) evaluates the performance of ‘Join’ operations. For
Sounds like a very interesting issue.
While I’m evaluating Calcite for JDBC adaptor over postgreSQL with TPC-DS
queries, where Calcite queries 2~10 times slower than native postgresql queries
through psql. So, including JDBC latency issues, overall enhancement of
Avatica would be beneficial to
Hello Michael and Xiening,
Due to NDA, I cannot reveal in detail, but I recall one of my previous projects
where the sponsor wanted to do a sort of approximate query over RDBMs in
geo-distributed environments.
Roughly speaking, they tried to find if the entity of interest can be connected
to
Looking at query examples in VerdictDB, most of TPC-DS queries can earn a big
benefit. They are mostly top-k queries over aggregated results. And the
availability of various sampling techniques make the VerdictDB attractive to
machine learning/graph analysis cases.
— Seung-Hwan
> On May 4, 201
