apache/spark — pull request #3354 by andrewor14 (2014-11-19 02:36:46+00:00)
Title: [SPARK-4480] Avoid many small spills in external data structures (1.1)

This is the branch-1.1 version of #3353. This requires a separate PR because the code in master has been refactored a little to eliminate duplicate code. I have tested this on a standalone cluster. The goal is to merge this into 1.1.1.