Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/4135#discussion_r26237008
--- Diff:
streaming/src/test/scala/org/apache/spark/streaming/ReceiverSuite.scala ---
@@ -129,6 +130,41 @@ class ReceiverSuite extends TestSuiteBase with
Timeouts with Serializable {
}
}
+ test("kill receiver") {
+ val sparkConf = new SparkConf()
+ .setMaster("local[4]")
+ .setAppName(framework)
+ val batchDuration = Milliseconds(1000)
+ withStreamingContext(new StreamingContext(sparkConf, batchDuration)) {
ssc =>
+ val receiver = new FakeReceiver
+ val executor = new FakeReceiverSupervisor(receiver)
+ val task = new FakeReceiverTask(0, executor)
+
+ new Thread("Receiver Task") {
+ override def run(): Unit = {
+ task.run(0, 0)
+ }
+ }.start()
+ Thread.sleep(2000)
+
+ // Verify that receiver was started
+ assert(receiver.onStartCalled)
+ assert(executor.isReceiverStarted)
+ assert(receiver.isStarted)
+ assert(!receiver.isStopped())
+ assert(receiver.otherThread.isAlive)
+
+ task.kill(false)
+
--- End diff --
There's some asynchrony in task killing, so these checks that the receiver
was stopped need to be wrapped in an `eventually` block or some use some other
mechanism to avoid race conditions.
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