Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/1632#discussion_r16094973
--- Diff:
core/src/main/scala/org/apache/spark/network/ConnectionManager.scala ---
@@ -836,9 +845,14 @@ private[spark] class ConnectionManager(
def sendMessageReliably(connectionManagerId: ConnectionManagerId,
message: Message)
: Future[Message] = {
val promise = Promise[Message]()
+
+ val ackTimeoutMonitor = new Timer(s"Ack Timeout Monitor-" +
--- End diff --
I think we can create a ConnectionManager-wide Timer and submit multiple
tasks to it. MessageStatus could store a reference to the TimerTasks and we
could cancel those individual tasks when we receive acks.
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