Benchmark collecting dates

Author: MaxGekk

sql/core/src/test/scala/org/apache/spark/sql/execution/benchmark/DateTimeBenchmark.scala

@@ -131,7 +131,17 @@ object DateTimeBenchmark extends SqlBasedBenchmark {
           import spark.implicits._
           val rowsNum = 5000000
           val numIters = 3
-          val benchmark = new Benchmark("To/from java.sql.Timestamp", rowsNum, output = output)
+          val benchmark = new Benchmark("To/from Java's date-time", rowsNum, output = output)
+          benchmark.addCase("From java.sql.Date", numIters) { _ =>
+            spark.range(rowsNum)
+              .map(millis => new java.sql.Date(millis))
+              .noop()
+          }
+          benchmark.addCase("Collect dates", numIters) { _ =>
+            spark.range(0, rowsNum, 1, 1)
+              .map(millis => new java.sql.Date(millis))
+              .collect()
+          }
           benchmark.addCase("From java.sql.Timestamp", numIters) { _ =>
             spark.range(rowsNum)
               .map(millis => new Timestamp(millis))