apache/spark — pull request #3647 by ilayaperumalg (2014-12-09 20:14:25+00:00)
Title: [SPARK-4802] Remove receiverInfo once receiver is de-registered

Once the streaming receiver is de-registered at executor, the `ReceiverTrackerActor` needs to
remove the corresponding reveiverInfo from the `receiverInfo` map at `ReceiverTracker`.