Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/11113#discussion_r52155123
--- Diff:
examples/src/main/scala/org/apache/spark/examples/streaming/ActorWordCount.scala
---
@@ -63,7 +61,7 @@ class FeederActor extends Actor {
def receive: Receive = {
case SubscribeReceiver(receiverActor: ActorRef) =>
println("received subscribe from %s".format(receiverActor.toString))
- receivers = LinkedList(receiverActor) ++ receivers
+ receivers = MutableList(receiverActor) ++ receivers
--- End diff --
If you retain a Scala collection here, it's more direct / efficient in
theory to write `receiverActor +=: receivers` to prepend. In practice, I don't
know what people find easier to understand.
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