================================================================================================ unsafe projection ================================================================================================ OpenJDK 64-Bit Server VM 1.8.0_222-b10 on Linux 3.10.0-862.3.2.el7.x86_64 Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz unsafe projection: Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative ------------------------------------------------------------------------------------------------------------------------ single long 2173 2173 0 123.5 8.1 1.0X single nullable long 3156 3157 2 85.0 11.8 0.7X 7 primitive types 6725 6726 2 39.9 25.1 0.3X 7 nullable primitive types 11399 11400 2 23.5 42.5 0.2X