Github user jackylk commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/1713#discussion_r164676060
--- Diff:
examples/spark2/src/main/scala/org/apache/carbondata/examples/ConcurrencyTest.scala
---
@@ -18,44 +18,60 @@
package org.apache.carbondata.examples
import java.io.File
+import java.text.SimpleDateFormat
import java.util
+import java.util.Date
import java.util.concurrent.{Callable, Executors, Future, TimeUnit}
import scala.util.Random
import org.apache.spark.sql.{DataFrame, Row, SaveMode, SparkSession}
import org.apache.spark.sql.types._
-import org.apache.carbondata.core.constants.CarbonCommonConstants
+import org.apache.carbondata.core.constants.{CarbonCommonConstants,
CarbonVersionConstants}
import org.apache.carbondata.core.util.{CarbonProperties, CarbonUtil}
// scalastyle:off println
object ConcurrencyTest {
--- End diff --
please make a benchmark package and move it there, rename the class to
`ConcurrencyBenchmark`
---
