drill

398c114b - DRILL-8057: INFORMATION_SCHEMA filter push down is inefficient (#2388)

DRILL-8057: INFORMATION_SCHEMA filter push down is inefficient (#2388) * Add schema search tree pruning capability to InfoSchema. * Fix checkstyle, address review comments. * WIP. * WIP. * Address review comments. * Clean up and add a unit test of lazy schema registration. * Remove call to registerSchemas() in PlanningBase.