Hello - While surfing the code in "apply" function of CalcitePlannerAction (CalcitePlanner.java), I see that most rules are passed to a HepPlanner to arrive at the "least cost" operator tree.
The HiveVolcanoPlanner although defined and initialized is never invoked to find the best operator tree. I want to change the planner from Hep to Volcano, for the following reason: to obtain a collection of costlier join orders. Passing the rules for the Hep Planner as is to HiveVolcano planner does not help. The query plan is never altered. Any ideas, what rules need to be passed to the HiveVolcanoPlanner for effective CBO ? Thanks, Raajay
