Github user Fokko commented on the issue:
https://github.com/apache/spark/pull/21596
It took some time, but here it is, current master:
```
MacBook-Pro-van-Fokko:dist fokkodriesprong$ cat /tmp/spark-master.txt
Preparing data for benchmarking ...
Running benchmark: JSON schema inferring
Running case: No encoding
Stopped after 3 iterations, 153857 ms
Running case: UTF-8 is set
Stopped after 3 iterations, 210849 ms
Java HotSpot(TM) 64-Bit Server VM 1.8.0_172-b11 on Mac OS X 10.13.5
Intel(R) Core(TM) i7-7820HQ CPU @ 2.90GHz
JSON schema inferring: Best/Avg Time(ms) Rate(M/s)
Per Row(ns) Relative
------------------------------------------------------------------------------------------------
No encoding 43607 / 51286 2,3
436,1 1,0X
UTF-8 is set 69107 / 70283 1,4
691,1 0,6X
Preparing data for benchmarking ...
Running benchmark: JSON per-line parsing
Running case: No encoding
Stopped after 3 iterations, 32557 ms
Running case: UTF-8 is set
Stopped after 3 iterations, 52323 ms
Java HotSpot(TM) 64-Bit Server VM 1.8.0_172-b11 on Mac OS X 10.13.5
Intel(R) Core(TM) i7-7820HQ CPU @ 2.90GHz
JSON per-line parsing: Best/Avg Time(ms) Rate(M/s)
Per Row(ns) Relative
------------------------------------------------------------------------------------------------
No encoding 10157 / 10853 9,8
101,6 1,0X
UTF-8 is set 17310 / 17441 5,8
173,1 0,6X
Preparing data for benchmarking ...
Running benchmark: JSON parsing of wide lines
Running case: No encoding
Stopped after 3 iterations, 74416 ms
Running case: UTF-8 is set
Stopped after 3 iterations, 88192 ms
Java HotSpot(TM) 64-Bit Server VM 1.8.0_172-b11 on Mac OS X 10.13.5
Intel(R) Core(TM) i7-7820HQ CPU @ 2.90GHz
JSON parsing of wide lines: Best/Avg Time(ms) Rate(M/s)
Per Row(ns) Relative
------------------------------------------------------------------------------------------------
No encoding 24311 / 24806 0,4
2431,1 1,0X
UTF-8 is set 27971 / 29398 0,4
2797,1 0,9X
```
New Jackson:
```
Java HotSpot(TM) 64-Bit Server VM 1.8.0_172-b11 on Mac OS X 10.13.5
Intel(R) Core(TM) i7-7820HQ CPU @ 2.90GHz
JSON schema inferring: Best/Avg Time(ms) Rate(M/s)
Per Row(ns) Relative
------------------------------------------------------------------------------------------------
No encoding 45615 / 46109 2,2
456,2 1,0X
UTF-8 is set 67516 / 69291 1,5
675,2 0,7X
Preparing data for benchmarking ...
Running benchmark: JSON per-line parsing
Running case: No encoding
Stopped after 3 iterations, 36206 ms
Running case: UTF-8 is set
Stopped after 3 iterations, 63400 ms
Java HotSpot(TM) 64-Bit Server VM 1.8.0_172-b11 on Mac OS X 10.13.5
Intel(R) Core(TM) i7-7820HQ CPU @ 2.90GHz
JSON per-line parsing: Best/Avg Time(ms) Rate(M/s)
Per Row(ns) Relative
------------------------------------------------------------------------------------------------
No encoding 11803 / 12069 9,2
118,0 1,0X
UTF-8 is set 19500 / 21134 5,1
195,0 0,6X
Preparing data for benchmarking ...
Running benchmark: JSON parsing of wide lines
Running case: No encoding
Stopped after 3 iterations, 69479 ms
Running case: UTF-8 is set
Stopped after 3 iterations, 82703 ms
Java HotSpot(TM) 64-Bit Server VM 1.8.0_172-b11 on Mac OS X 10.13.5
Intel(R) Core(TM) i7-7820HQ CPU @ 2.90GHz
JSON parsing of wide lines: Best/Avg Time(ms) Rate(M/s)
Per Row(ns) Relative
------------------------------------------------------------------------------------------------
No encoding 23044 / 23160 0,4
2304,4 1,0X
UTF-8 is set 27194 / 27568 0,4
2719,4 0,8X
```
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