apache/spark — pull request #3356 by zsxwing (2014-11-19 02:44:42+00:00)
Title: [SPARK-4481][Streaming][Doc] Fix the wrong description of updateFunc

Removed `If `this` function returns None, then corresponding state key-value pair will be eliminated.` for the description of `updateFunc: (Iterator[(K, Seq[V], Option[S])]) => Iterator[(K, S)]`