HepPlanner is a greedy planner & VolcanoPlanner is a more exhaustive
planner.
ReloptCluster captures env for planning; it holds on to type factory,
metadata providerŠ
Having said that these are just required plumbings needed to explore plan
alternatives.
CalcitePlanner, Meta data providers, Relopt
Hi all,
I'm reading the source code of Hive cbo (CalcaitePlanner), but I find it hard
to follow.
Listed below are some of the questions:
1. What's the relationship between HepPlanner and HiveVolcanoPlanner?
2. I don't have a clue about these concepts: clusters, traitDef and
collectGarbage().
Th
