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unsafe projection
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OpenJDK 64-Bit Server VM 1.8.0_181-b13 on Linux 3.10.0-862.3.2.el7.x86_64
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
unsafe projection:                       Best/Avg Time(ms)    Rate(M/s)   Per Row(ns)   Relative
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single long                                   2867 / 2868         93.6          10.7       1.0X
single nullable long                          3915 / 3949         68.6          14.6       0.7X
7 primitive types                             8166 / 8167         32.9          30.4       0.4X
7 nullable primitive types                  12767 / 12767         21.0          47.6       0.2X