Using KDBTree for for the spatial joins…

Grid B1 (304 partitions) Grid B2 (552 partitions) Grid B4 (1108 partitions)

• KDBTree parameters: Max entries per node=500, Max levels=1024.

• Dataset: Berlin (x1) with 3 executors, Berlin (x2) with 6 executors and Berlin (x4) with 12 executors.
• 4 cores per executor.