Shim to allow us to implement scala.Iterator in Java.
Builds a map in which keys are case insensitive.
This is an internal data representation for map type in Spark SQL.
Helper class to compute approximate quantile summary.
Helper functions for converting between internal and external date and time representations.
Build a map with String type of key, and it also supports either key case sensitive or insensitive.
Helper functions to check for valid data types.
Silences output to stderr or stdout for the duration of f