Github user rdblue commented on a diff in the pull request:
https://github.com/apache/spark/pull/21556#discussion_r202447544
--- Diff: sql/core/benchmarks/FilterPushdownBenchmark-results.txt ---
@@ -292,120 +292,120 @@ Intel(R) Core(TM) i7-7820HQ CPU @ 2.90GHz
Select 1 decimal(9, 2) row (value = 7864320): Best/Avg Time(ms)
Rate(M/s) Per Row(ns) Relative
------------------------------------------------------------------------------------------------
-Parquet Vectorized 3785 / 3867 4.2
240.6 1.0X
-Parquet Vectorized (Pushdown) 3820 / 3928 4.1
242.9 1.0X
-Native ORC Vectorized 3981 / 4049 4.0
253.1 1.0X
-Native ORC Vectorized (Pushdown) 702 / 735 22.4
44.6 5.4X
+Parquet Vectorized 4407 / 4852 3.6
280.2 1.0X
+Parquet Vectorized (Pushdown) 1602 / 1634 9.8
101.8 2.8X
--- End diff --
Okay, I see. The tenths and hundredths are always 0, which makes the
precision-8 numbers actually precision-10. It is still odd that this is causing
Parquet to have no stats, but I'm happy with the fix. Thanks for explaining.
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