Cloudera documentation reference

http://www.cloudera.com/documentation/enterprise/5-2-x/topics/introduction.html

RegExp

http://stackoverflow.com/questions/5286885/how-to-split-this-string-by-regex

Scala> val r = """(?<=\w)\b"""

r: String = (?<=\w)\b

scala> val items = "a.bold#empty.red".split(r)

items: Array[String] = Array(a, .bold, #empty, .red)

scala> val r = """(?:.|#)?\w+"""

r: String = (?:.|#)?\w+

scala> val items = "a.bold#empty.red".split(r)

items: Array[String] = Array()