This is an umbrella JIRA to track MLlib wrappers in SparkR for the release 2.1. The wrappers should follow existing implementations such as `spark.glm`, `spark.kmeans`, `spark.naiveBayes`, etc. And the APIs should follow
Implementation should also update `read.ml` to load the saved models back. Documentation should follow
SPARK-16090 and group the methods above into a single Rd.