OpenJDK 64-Bit Server VM 1.8.0_282-b08 on Linux 5.4.0-1043-azure Intel(R) Xeon(R) Platinum 8171M CPU @ 2.60GHz dynamic insert table benchmark, totalRows = 200000: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative ---------------------------------------------------------------------------------------------------------------------------------- one partition column, 100 partitions 5195 5197 3 0.0 25976.7 1.0X two partition columns, 500 partitions 13231 13395 232 0.0 66154.1 0.4X three partition columns, 2000 partitions 36808 37118 437 0.0 184041.2 0.1X