Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/3868#discussion_r23706702
--- Diff:
streaming/src/main/scala/org/apache/spark/streaming/scheduler/ReceiverTracker.scala
---
@@ -223,22 +224,33 @@ class ReceiverTracker(ssc: StreamingContext,
skipReceiverLaunch: Boolean = false
thread.start()
}
- def stop() {
+ def stop(graceful: Boolean) {
// Send the stop signal to all the receivers
stopReceivers()
// Wait for the Spark job that runs the receivers to be over
// That is, for the receivers to quit gracefully.
+
thread.join(10000)
// Check if all the receivers have been deregistered or not
+ def done = { receiverInfo.isEmpty && terminated }
+
+ if (graceful) {
+ while (!done) {
+ Thread.sleep(100)
+ }
+ }
+
if (!receiverInfo.isEmpty) {
- logWarning("All of the receivers have not deregistered, " +
receiverInfo)
+ logWarning(s"All of the receivers have not deregistered,
${receiverInfo}")
} else {
logInfo("All of the receivers have deregistered successfully")
}
}
+
--- End diff --
Why the extra lines.
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