================================================================================================
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                                       70753          71127         471          1.4         707.5       1.0X
UTF-8 is set                                     128105         129183        1165          0.8        1281.1       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
count a short column:                     Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
------------------------------------------------------------------------------------------------------------------------
No encoding                                       59588          59643          73          1.7         595.9       1.0X
UTF-8 is set                                      97081          97122          62          1.0         970.8       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
count a wide column:                      Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
------------------------------------------------------------------------------------------------------------------------
No encoding                                       58835          59259         659          0.2        5883.5       1.0X
UTF-8 is set                                     103117         103218          88          0.1       10311.7       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                                      142993         143485         436          0.0      285985.3       1.0X
UTF-8 is set                                     165446         165496          60          0.0      330892.4       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                                 21557          21593          61          0.5        2155.7       1.0X
Select 1 column                                   24197          24236          35          0.4        2419.7       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                      9795           9820          29          1.0         979.5       1.0X
Short column with UTF-8                           16442          16536         146          0.6        1644.2       0.6X
Wide column without encoding                      99134          99475         300          0.1        9913.4       0.1X
Wide column with UTF-8                           155913         156369         692          0.1       15591.3       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 functions:                           Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
------------------------------------------------------------------------------------------------------------------------
Text read                                           671            679           7         14.9          67.1       1.0X
from_json                                         25356          25432          79          0.4        2535.6       0.0X
json_tuple                                        29464          29927         672          0.3        2946.4       0.0X
get_json_object                                   21841          21877          32          0.5        2184.1       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                                          3109           3116          12         16.1          62.2       1.0X
schema inferring                                  28751          28765          15          1.7         575.0       0.1X
parsing                                           34923          35030         151          1.4         698.5       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                                         10787          10818          32          4.6         215.7       1.0X
Schema inferring                                  49577          49775         184          1.0         991.5       0.2X
Parsing without charset                           35343          35433          87          1.4         706.9       0.3X
Parsing with UTF-8                                60253          60290          35          0.8        1205.1       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                     2200           2209           8          4.5         220.0       1.0X
to_json(timestamp)                                18410          18602         264          0.5        1841.0       0.1X
write timestamps to files                         11841          12032         305          0.8        1184.1       0.2X
Create a dataset of dates                          2353           2363           9          4.3         235.3       0.9X
to_json(date)                                     12135          12182          72          0.8        1213.5       0.2X
write dates to files                               6776           6801          33          1.5         677.6       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                     2563           2580          20          3.9         256.3       1.0X
read timestamps from files                        41261          41360          97          0.2        4126.1       0.1X
infer timestamps from files                       92292          92517         243          0.1        9229.2       0.0X
read date text from files                          2332           2340          11          4.3         233.2       1.1X
read date from files                              18753          18768          13          0.5        1875.3       0.1X
timestamp strings                                  3108           3123          13          3.2         310.8       0.8X
parse timestamps from Dataset[String]             51078          51448         323          0.2        5107.8       0.1X
infer timestamps from Dataset[String]            101373         101429          65          0.1       10137.3       0.0X
date strings                                       4126           4138          15          2.4         412.6       0.6X
parse dates from Dataset[String]                  29365          29398          30          0.3        2936.5       0.1X
from_json(timestamp)                              67033          67098          63          0.1        6703.3       0.0X
from_json(date)                                   44495          44581         125          0.2        4449.5       0.1X

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
Filters pushdown:                         Best Time(ms)   Avg Time(ms)   Stdev(ms)    Rate(M/s)   Per Row(ns)   Relative
------------------------------------------------------------------------------------------------------------------------
w/o filters                                       30167          30223          48          0.0      301674.9       1.0X
pushdown disabled                                 30291          30311          30          0.0      302914.8       1.0X
w/ filters                                          901            915          14          0.1        9012.4      33.5X


