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Commit 2e6b736b authored by Takeshi Yamamuro's avatar Takeshi Yamamuro Committed by Ankur Dave
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[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.

Author: Takeshi Yamamuro <linguin.m.s@gmail.com>

Closes #3507 from maropu/TimSortInEdgePartitionBuilderSpike and squashes the following commits:

8d4e5d2 [Takeshi Yamamuro] Remove a wildcard import
3527e00 [Takeshi Yamamuro] Replace Scala.util.Sorting.quickSort with Sorter(TimSort) in Spark
parent e895e0cb
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