Github user jerryshao commented on a diff in the pull request:
https://github.com/apache/spark/pull/3912#discussion_r22570265
--- Diff:
streaming/src/main/scala/org/apache/spark/streaming/receiver/ReceiverSupervisorImpl.scala
---
@@ -73,14 +73,16 @@ private[streaming] class ReceiverSupervisorImpl(
/** Timeout for Akka actor messages */
private val askTimeout = AkkaUtils.askTimeout(env.conf)
+ private var numRegisterAttemps = -1
/** Akka actor for receiving messages from the ReceiverTracker in the
driver */
private val actor = env.actorSystem.actorOf(
Props(new Actor {
override def preStart() {
- logInfo("Registered receiver " + streamId)
- val msg = RegisterReceiver(
- streamId, receiver.getClass.getSimpleName,
Utils.localHostName(), self)
+ numRegisterAttemps += 1
+ logInfo("Register receiver " + streamId + " before it starts ")
+ val msg = RegisterReceiver(streamId,
receiver.getClass.getSimpleName,
--- End diff --
A simple question, maybe not relevant to this PR, whye we need to have two
`RegisterReceiver` messages, one in Akka preStart, another in
`onReceiverStart()`, I'm not sure is there any specific purpose?
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