Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/8340#discussion_r37599615
--- Diff:
streaming/src/main/scala/org/apache/spark/streaming/scheduler/ReceiverSchedulingPolicy.scala
---
@@ -144,27 +141,31 @@ private[streaming] class ReceiverSchedulingPolicy {
val scheduledExecutors = mutable.Set[String]()
scheduledExecutors ++= preferredLocation
- val executorWeights = receiverTrackingInfoMap.values.flatMap {
receiverTrackingInfo =>
- receiverTrackingInfo.state match {
- case ReceiverState.INACTIVE => Nil
- case ReceiverState.SCHEDULED =>
- val scheduledExecutors =
receiverTrackingInfo.scheduledExecutors.get
- // The probability that a scheduled receiver will run in an
executor is
- // 1.0 / scheduledLocations.size
- scheduledExecutors.map(location => location -> (1.0 /
scheduledExecutors.size))
- case ReceiverState.ACTIVE =>
Seq(receiverTrackingInfo.runningExecutor.get -> 1.0)
- }
+ val executorWeights = receiverTrackingInfoMap.filter(_._1 !=
receiverId).values.flatMap {
--- End diff --
Could you add an explanation of why we are filtering?
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