Yanbo Liang 50e60e36f7 [SPARK-13504] [SPARKR] Add approxQuantile for SparkR ... ## What changes were proposed in this pull request? Add ```approxQuantile``` for SparkR. ## How was this patch tested? unit tests Author: Yanbo Liang <ybliang8@gmail.com> Closes #11383 from yanboliang/spark-13504 and squashes the following commits: 4f17adb [Yanbo Liang] Add approxQuantile for SparkR		2016-02-25 21:23:41 -08:00
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testthat	[SPARK-13504] [SPARKR] Add approxQuantile for SparkR	2016-02-25 21:23:41 -08:00