apache/spark — pull request #3507 by maropu (2014-11-28 07:51:17+00:00)
Title: [SPARK-4646] Replace Scala.util.Sorting.quickSort with Sorter(TimSort) in Spark

This patch just replaces a native quick sorter with Sorter(TimSort) in Spark.
It could get performance gains by ~8% in my quick experiments.