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Metadata Struct Benchmark
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OpenJDK 64-Bit Server VM 1.8.0_362-b09 on Linux 5.15.0-1031-azure
Intel(R) Xeon(R) Platinum 8272CL CPU @ 2.60GHz
Vectorized Parquet:                       Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
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no metadata columns                                 486            513          20         10.3          97.2       1.0X
_metadata.file_path                                 592            606          14          8.5         118.3       0.8X
_metadata.file_name                                 582            592           8          8.6         116.5       0.8X
_metadata.file_size                                 505            513           8          9.9         101.1       1.0X
_metadata.file_modification_time                    503            511           6          9.9         100.6       1.0X
_metadata.row_index                                 587            598           9          8.5         117.4       0.8X
_metadata                                           906            919           7          5.5         181.2       0.5X

OpenJDK 64-Bit Server VM 1.8.0_362-b09 on Linux 5.15.0-1031-azure
Intel(R) Xeon(R) Platinum 8272CL CPU @ 2.60GHz
Parquet-mr:                               Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
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no metadata columns                                1535           1557          15          3.3         307.1       1.0X
_metadata.file_path                                2056           2074          14          2.4         411.2       0.7X
_metadata.file_name                                2043           2064          19          2.4         408.7       0.8X
_metadata.file_size                                1846           1865          21          2.7         369.1       0.8X
_metadata.file_modification_time                   1845           1857           9          2.7         369.0       0.8X
_metadata.row_index                                1791           1811          15          2.8         358.1       0.9X
_metadata                                          2689           2706          14          1.9         537.8       0.6X

OpenJDK 64-Bit Server VM 1.8.0_362-b09 on Linux 5.15.0-1031-azure
Intel(R) Xeon(R) Platinum 8272CL CPU @ 2.60GHz
JSON:                                     Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
------------------------------------------------------------------------------------------------------------------------
no metadata columns                                5685           5736          21          0.9        1137.1       1.0X
_metadata.file_path                                6131           6166          18          0.8        1226.2       0.9X
_metadata.file_name                                6149           6167          11          0.8        1229.9       0.9X
_metadata.file_size                                5946           5972          15          0.8        1189.2       1.0X
_metadata.file_modification_time                   5911           5950          13          0.8        1182.1       1.0X
_metadata                                          6563           6588          32          0.8        1312.6       0.9X


