dongjoon-hyun commented on a change in pull request #24311: [SPARK-27401][SQL]
Refactoring conversion of Timestamp to/from java.sql.Timestamp
URL: https://github.com/apache/spark/pull/24311#discussion_r273282195
##########
File path: sql/core/benchmarks/DateTimeBenchmark-results.txt
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@@ -414,3 +414,16 @@ to_date wholestage off 1477 / 1479
0.7 14
to_date wholestage on 1468 / 1473 0.7
1468.2 1.0X
+================================================================================================
+Conversion from/to external types
+================================================================================================
+
+Java HotSpot(TM) 64-Bit Server VM 1.8.0_202-b08 on Mac OS X 10.14.4
+Intel(R) Core(TM) i7-4850HQ CPU @ 2.30GHz
+To/from java.sql.Timestamp: Best Time(ms) Avg Time(ms)
Stdev(ms) Rate(M/s) Per Row(ns) Relative
+------------------------------------------------------------------------------------------------------------------------
+From java.sql.Timestamp 309 316
8 16.2 61.9 1.0X
+Collect longs 1410 2747
1158 3.5 282.0 0.2X
Review comment:
Oh, could you rerun this in the more stable environment?
`Stdev` looks too high to use as a future reference.
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