================================================================================================
Benchmark for performance of JSON parsing
================================================================================================

Preparing data for benchmarking ...
OpenJDK 64-Bit Server VM 11.0.7+10-post-Ubuntu-2ubuntu218.04 on Linux 4.15.0-1063-aws
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
JSON schema inferring:                    Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
------------------------------------------------------------------------------------------------------------------------
No encoding                                       73307          73400         141          1.4         733.1       1.0X
UTF-8 is set                                     143834         143925         152          0.7        1438.3       0.5X

Preparing data for benchmarking ...
OpenJDK 64-Bit Server VM 11.0.7+10-post-Ubuntu-2ubuntu218.04 on Linux 4.15.0-1063-aws
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
count a short column:                     Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
------------------------------------------------------------------------------------------------------------------------
No encoding                                       50894          51065         292          2.0         508.9       1.0X
UTF-8 is set                                      98462          99455        1173          1.0         984.6       0.5X

Preparing data for benchmarking ...
OpenJDK 64-Bit Server VM 11.0.7+10-post-Ubuntu-2ubuntu218.04 on Linux 4.15.0-1063-aws
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
count a wide column:                      Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
------------------------------------------------------------------------------------------------------------------------
No encoding                                       64011          64969        1001          0.2        6401.1       1.0X
UTF-8 is set                                     102757         102984         311          0.1       10275.7       0.6X

Preparing data for benchmarking ...
OpenJDK 64-Bit Server VM 11.0.7+10-post-Ubuntu-2ubuntu218.04 on Linux 4.15.0-1063-aws
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
select wide row:                          Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
------------------------------------------------------------------------------------------------------------------------
No encoding                                      132559         133561        1010          0.0      265117.3       1.0X
UTF-8 is set                                     151458         152129         611          0.0      302915.4       0.9X

Preparing data for benchmarking ...
OpenJDK 64-Bit Server VM 11.0.7+10-post-Ubuntu-2ubuntu218.04 on Linux 4.15.0-1063-aws
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
Select a subset of 10 columns:            Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
------------------------------------------------------------------------------------------------------------------------
Select 10 columns                                 21148          21202          87          0.5        2114.8       1.0X
Select 1 column                                   24701          24724          21          0.4        2470.1       0.9X

Preparing data for benchmarking ...
OpenJDK 64-Bit Server VM 11.0.7+10-post-Ubuntu-2ubuntu218.04 on Linux 4.15.0-1063-aws
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
creation of JSON parser per line:         Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
------------------------------------------------------------------------------------------------------------------------
Short column without encoding                      6945           6998          59          1.4         694.5       1.0X
Short column with UTF-8                           11510          11569          51          0.9        1151.0       0.6X
Wide column without encoding                      95004          95795         790          0.1        9500.4       0.1X
Wide column with UTF-8                           149223         149409         276          0.1       14922.3       0.0X

Preparing data for benchmarking ...
OpenJDK 64-Bit Server VM 11.0.7+10-post-Ubuntu-2ubuntu218.04 on Linux 4.15.0-1063-aws
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
JSON functions:                           Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
------------------------------------------------------------------------------------------------------------------------
Text read                                           649            652           3         15.4          64.9       1.0X
from_json                                         22284          22393          99          0.4        2228.4       0.0X
json_tuple                                        32310          32824         484          0.3        3231.0       0.0X
get_json_object                                   22111          22751         568          0.5        2211.1       0.0X

Preparing data for benchmarking ...
OpenJDK 64-Bit Server VM 11.0.7+10-post-Ubuntu-2ubuntu218.04 on Linux 4.15.0-1063-aws
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
Dataset of json strings:                  Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
------------------------------------------------------------------------------------------------------------------------
Text read                                          2894           2903           8         17.3          57.9       1.0X
schema inferring                                  26724          26785          62          1.9         534.5       0.1X
parsing                                           37502          37632         131          1.3         750.0       0.1X

Preparing data for benchmarking ...
OpenJDK 64-Bit Server VM 11.0.7+10-post-Ubuntu-2ubuntu218.04 on Linux 4.15.0-1063-aws
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
Json files in the per-line mode:          Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
------------------------------------------------------------------------------------------------------------------------
Text read                                         10994          11010          16          4.5         219.9       1.0X
Schema inferring                                  45654          45677          37          1.1         913.1       0.2X
Parsing without charset                           34476          34559          73          1.5         689.5       0.3X
Parsing with UTF-8                                56987          57002          13          0.9        1139.7       0.2X

OpenJDK 64-Bit Server VM 11.0.7+10-post-Ubuntu-2ubuntu218.04 on Linux 4.15.0-1063-aws
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
Write dates and timestamps:               Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
------------------------------------------------------------------------------------------------------------------------
Create a dataset of timestamps                     2150           2188          35          4.7         215.0       1.0X
to_json(timestamp)                                17874          18080         294          0.6        1787.4       0.1X
write timestamps to files                         12518          12538          34          0.8        1251.8       0.2X
Create a dataset of dates                          2298           2310          18          4.4         229.8       0.9X
to_json(date)                                     11673          11703          27          0.9        1167.3       0.2X
write dates to files                               7121           7135          12          1.4         712.1       0.3X

OpenJDK 64-Bit Server VM 11.0.7+10-post-Ubuntu-2ubuntu218.04 on Linux 4.15.0-1063-aws
Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
Read dates and timestamps:                Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
------------------------------------------------------------------------------------------------------------------------
read timestamp text from files                     2616           2641          34          3.8         261.6       1.0X
read timestamps from files                        37481          37517          58          0.3        3748.1       0.1X
infer timestamps from files                       84774          84964         201          0.1        8477.4       0.0X
read date text from files                          2362           2365           3          4.2         236.2       1.1X
read date from files                              16583          16612          29          0.6        1658.3       0.2X
timestamp strings                                  3927           3963          40          2.5         392.7       0.7X
parse timestamps from Dataset[String]             52827          53004         243          0.2        5282.7       0.0X
infer timestamps from Dataset[String]            101108         101644         769          0.1       10110.8       0.0X
date strings                                       4886           4906          26          2.0         488.6       0.5X
parse dates from Dataset[String]                  27623          27694          62          0.4        2762.3       0.1X
from_json(timestamp)                              71764          71887         124          0.1        7176.4       0.0X
from_json(date)                                   46200          46314          99          0.2        4620.0       0.1X


