FilterSetOpTransposeRule, ProjectSetOpTransposeRule are leveraged in
They are used in HepPlanner, but if they additionally will be enabled in main logical planning stage for Volcano planner, more cases will be covered with these rules.
Current plan after performing rules:
Since LogicalFilter isn't under LogicalUnion the FilterSetOpTransposeRule is not performed.
FilterJoinRule from main Drill logical stage pushes LogicalFilter below, but the stage with FilterSetOpTransposeRule is already finished.
That's why FilterSetOpTransposeRule and ProjectSetOpTransposeRule should be used in Drill main logical stage with Volcano planner.