Liang-Chi Hsieh 3ca367083e [SPARK-22001][ML][SQL] ImputerModel can do withColumn for all input columns at one pass ... ## What changes were proposed in this pull request? SPARK-21690 makes one-pass `Imputer` by parallelizing the computation of all input columns. When we transform dataset with `ImputerModel`, we do `withColumn` on all input columns sequentially. We can also do this on all input columns at once by adding a `withColumns` API to `Dataset`. The new `withColumns` API is for internal use only now. ## How was this patch tested? Existing tests for `ImputerModel`'s change. Added tests for `withColumns` API. Author: Liang-Chi Hsieh <viirya@gmail.com> Closes #19229 from viirya/SPARK-22001.		2017-10-01 10:49:22 -07:00
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src	[SPARK-22001][ML][SQL] ImputerModel can do withColumn for all input columns at one pass	2017-10-01 10:49:22 -07:00
pom.xml	[SPARK-14280][BUILD][WIP] Update change-version.sh and pom.xml to add Scala 2.12 profiles and enable 2.12 compilation	2017-09-01 19:21:21 +01:00