Github user MaxGekk commented on a diff in the pull request:
https://github.com/apache/spark/pull/22844#discussion_r230030467
--- Diff: sql/core/benchmarks/JSONBenchmark-results.txt ---
@@ -0,0 +1,37 @@
+================================================================================================
+Benchmark for performance of JSON parsing
+================================================================================================
+
+Preparing data for benchmarking ...
+OpenJDK 64-Bit Server VM 1.8.0_191-b12 on Linux 3.10.0-862.3.2.el7.x86_64
+Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
+JSON schema inferring: Best/Avg Time(ms) Rate(M/s)
Per Row(ns) Relative
+------------------------------------------------------------------------------------------------
+No encoding 62946 / 63310 1.6
629.5 1.0X
+UTF-8 is set 112814 / 112866 0.9
1128.1 0.6X
+
+Preparing data for benchmarking ...
+OpenJDK 64-Bit Server VM 1.8.0_191-b12 on Linux 3.10.0-862.3.2.el7.x86_64
+Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
+JSON per-line parsing: Best/Avg Time(ms) Rate(M/s)
Per Row(ns) Relative
+------------------------------------------------------------------------------------------------
+No encoding 16468 / 16553 6.1
164.7 1.0X
+UTF-8 is set 16420 / 16441 6.1
164.2 1.0X
+
+Preparing data for benchmarking ...
+OpenJDK 64-Bit Server VM 1.8.0_191-b12 on Linux 3.10.0-862.3.2.el7.x86_64
+Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz
+JSON parsing of wide lines: Best/Avg Time(ms) Rate(M/s)
Per Row(ns) Relative
+------------------------------------------------------------------------------------------------
+No encoding 39789 / 40053 0.3
3978.9 1.0X
+UTF-8 is set 39505 / 39584 0.3
3950.5 1.0X
--- End diff --
The numbers for currently used Jackson parser should be slightly different.
The PR https://github.com/apache/spark/pull/22920 triggers creation of Jackson
parser.
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