Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/3868#discussion_r22444560
--- Diff:
streaming/src/main/scala/org/apache/spark/streaming/scheduler/ReceiverTracker.scala
---
@@ -285,16 +307,18 @@ class ReceiverTracker(ssc: StreamingContext,
skipReceiverLaunch: Boolean = false
// Distribute the receivers and start them
logInfo("Starting " + receivers.length + " receivers")
+ terminated = false
ssc.sparkContext.runJob(tempRDD,
ssc.sparkContext.clean(startReceiver))
+ terminated = true
logInfo("All of the receivers have been terminated")
}
/** Stops the receivers. */
private def stopReceivers() {
// Signal the receivers to stop
- receiverInfo.values.flatMap { info => Option(info.actor)}
- .foreach { _ ! StopReceiver }
- logInfo("Sent stop signal to all " + receiverInfo.size + "
receivers")
+ val receivers = receiverInfo.values.flatMap { info =>
Option(info.actor) }
+ receivers.foreach { _ ! StopReceiver }
+ logInfo("Sent stop signal to all " + receivers.size + " receivers")
--- End diff --
Might as well use string interpolation here, if you're going to change
things anyways:
```scala
logInfo(s"Sent stop signal to all ${receivers.size} receivers")
```
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