Spark 1.1 switched default sorting algorithm from quicksort to TimSort as well in both the map and reduce phases- https://databricks.com/blog/2014/10/10/spark-

Spark 1.1 switched default sorting algorithm from quicksort to TimSort as well in both the map and reduce phases- https://databricks.com/blog/2014/10/10/spark-petabyte-sort.html https://databricks.com/blog/2014/10/10/spark-petabyte-sort.h...