[SPARK-10045] Add support for DataFrameStatFunctions in SparkR

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Component/s: SparkR
• Assignee: Unassigned
• Reporter: Sun Rui
• Created: 17/Aug/15 05:41
• Updated: 20/Oct/15 08:00
• Resolved: 20/Oct/15 08:00

Description

The stat functions are defined in http://spark.apache.org/docs/latest/api/scala/index.html#org.apache.spark.sql.DataFrameStatFunctions.

Currently only crosstab() is supported.
Functions to be supported include:
corr, cov, freqItems

Issue Links

• incorporates: SPARK-10996 Implement sampleBy() in DataFrameStatFunctions
• is duplicated by: SPARK-10844 SparkR: Add correlation function to dataframe

Sub-Tasks

• Implement corr() and cov in DataFrameStatFunctions: Resolved
• Implement freqItems() and sampleBy() in DataFrameStatFunctions: Closed
• Export freqItems() for DataFrameStatFunctions in SparkR: Resolved