[Calcite] Volcano planner fails to optimize

2016-06-21 Thread Zhangrucong
Hi everyone, I want to test calcite optimization of volcano planner with null cost factory. To avoid implementing some RelNodes and ConvertRules, I use BindableConvention trait set to transform converted RelNode. The QueryPlanner references to the implementation of SamzaSQL: https://github.com

About planner questions!

2016-06-14 Thread Zhangrucong
Hello everyone: Now I am learning calcite streamSQL. Samza is a stream system and uses calcite very well. I have a question about planner. Anyone can help me. Thanks in advance. The question is following: 1、 I want to know what is the difference between HepPlanner and VolcanoPlanner? For st