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Nested Schema Pruning Benchmark For ORC v2
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OpenJDK 64-Bit Server VM 1.8.0_282-b08 on Linux 5.4.0-1043-azure
Intel(R) Xeon(R) CPU E5-2673 v4 @ 2.30GHz
Selection:                                Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
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Top-level column                                     51             59           9         19.5          51.2       1.0X
Nested column                                       472            492          15          2.1         471.7       0.1X
Nested column in array                             2371           2418          44          0.4        2370.9       0.0X

OpenJDK 64-Bit Server VM 1.8.0_282-b08 on Linux 5.4.0-1043-azure
Intel(R) Xeon(R) CPU E5-2673 v4 @ 2.30GHz
Limiting:                                 Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
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Top-level column                                    303            346          47          3.3         302.8       1.0X
Nested column                                      1015           1163         136          1.0        1014.8       0.3X
Nested column in array                             2867           2940         114          0.3        2866.9       0.1X

OpenJDK 64-Bit Server VM 1.8.0_282-b08 on Linux 5.4.0-1043-azure
Intel(R) Xeon(R) CPU E5-2673 v4 @ 2.30GHz
Repartitioning:                           Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
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Top-level column                                    255            265           5          3.9         255.4       1.0X
Nested column                                      1026           1047          17          1.0        1026.1       0.2X
Nested column in array                             2760           2813          37          0.4        2760.2       0.1X

OpenJDK 64-Bit Server VM 1.8.0_282-b08 on Linux 5.4.0-1043-azure
Intel(R) Xeon(R) CPU E5-2673 v4 @ 2.30GHz
Repartitioning by exprs:                  Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
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Top-level column                                    245            258           8          4.1         245.2       1.0X
Nested column                                      1085           1124          35          0.9        1084.8       0.2X
Nested column in array                             2945           2993          36          0.3        2944.9       0.1X

OpenJDK 64-Bit Server VM 1.8.0_282-b08 on Linux 5.4.0-1043-azure
Intel(R) Xeon(R) CPU E5-2673 v4 @ 2.30GHz
Sample:                                   Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
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Top-level column                                     76             86          13         13.1          76.2       1.0X
Nested column                                       780            824          40          1.3         779.5       0.1X
Nested column in array                             2450           2530          68          0.4        2449.9       0.0X

OpenJDK 64-Bit Server VM 1.8.0_282-b08 on Linux 5.4.0-1043-azure
Intel(R) Xeon(R) CPU E5-2673 v4 @ 2.30GHz
Sorting:                                  Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
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Top-level column                                    396            425          26          2.5         395.6       1.0X
Nested column                                      1203           1255          51          0.8        1202.7       0.3X
Nested column in array                             3077           3159          44          0.3        3076.7       0.1X


