Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/4467#discussion_r30020503
--- Diff:
streaming/src/main/scala/org/apache/spark/streaming/scheduler/ReceiverTracker.scala
---
@@ -81,12 +112,14 @@ class ReceiverTracker(ssc: StreamingContext,
skipReceiverLaunch: Boolean = false
"ReceiverTracker", new ReceiverTrackerEndpoint(ssc.env.rpcEnv))
if (!skipReceiverLaunch) receiverExecutor.start()
logInfo("ReceiverTracker started")
+ trackerState = Started
}
}
/** Stop the receiver execution thread. */
def stop(graceful: Boolean): Unit = synchronized {
- if (!receiverInputStreams.isEmpty && endpoint != null) {
+ if (isTrackerStarted) {
+ trackerState = Stopping
--- End diff --
We need to prevent the receiver to step forward if the tracker is entering
stopping status. So we don't have the risk to lose data. Without
`ReceiverStarted`, we may have to modify the current receiver initialization.
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