Github user jodersky commented on a diff in the pull request:
https://github.com/apache/spark/pull/11113#discussion_r52214846
--- Diff:
examples/src/main/scala/org/apache/spark/examples/streaming/ActorWordCount.scala
---
@@ -63,11 +63,11 @@ class FeederActor extends Actor {
def receive: Receive = {
case SubscribeReceiver(receiverActor: ActorRef) =>
println("received subscribe from %s".format(receiverActor.toString))
- receivers = LinkedList(receiverActor) ++ receivers
+ receiverActor +=: receivers
case UnsubscribeReceiver(receiverActor: ActorRef) =>
println("received unsubscribe from
%s".format(receiverActor.toString))
- receivers = receivers.dropWhile(x => x eq receiverActor)
+ receivers.dropWhile(x => x eq receiverActor)
--- End diff --
Unfortunately, this does actually not remove the elements from the original
receivers (instead it creates a new ArrayBuffer without the given elements).
Please look at my previous comment, maybe a Set is better suited here
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