Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/7276#discussion_r35286791
--- Diff:
streaming/src/main/scala/org/apache/spark/streaming/scheduler/ReceiverTracker.scala
---
@@ -258,171 +319,242 @@ class ReceiverTracker(ssc: StreamingContext,
skipReceiverLaunch: Boolean = false
logWarning(s"Error reported by receiver for stream $streamId:
$messageWithError")
}
+ private def scheduleReceiver(receiverId: Int): Seq[String] = {
+ val preferredLocation =
receiverPreferredLocations.getOrElse(receiverId, None)
+ val scheduledLocations = schedulingPolicy.rescheduleReceiver(
+ receiverId, preferredLocation, receiverTrackingInfos, getExecutors)
+ updateReceiverScheduledLocations(receiverId, scheduledLocations)
+ scheduledLocations
+ }
+
+ private def updateReceiverScheduledLocations(
+ receiverId: Int, scheduledLocations: Seq[String]): Unit = {
+ val newReceiverTrackingInfo = receiverTrackingInfos.get(receiverId)
match {
+ case Some(oldInfo) =>
+ oldInfo.copy(state = ReceiverState.SCHEDULED,
+ scheduledLocations = Some(scheduledLocations))
+ case None =>
+ ReceiverTrackingInfo(
+ receiverId,
+ ReceiverState.SCHEDULED,
+ Some(scheduledLocations),
+ None)
--- End diff --
nit: What is none for? Could you write it as `xyz = None`? Easier to read.
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