Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/1195#discussion_r15199936
--- Diff:
streaming/src/test/scala/org/apache/spark/streaming/InputStreamsSuite.scala ---
@@ -236,6 +236,36 @@ class InputStreamsSuite extends TestSuiteBase with
BeforeAndAfter {
assert(output.sum === numTotalRecords)
}
+ /**
+ * Test to ensure callbacks are called when the store which has a
callback specified is called.
+ */
+ test("receiver with callbacks") {
+ val limit = 100
+ val testReceiver = new CallbackReceiver(limit)
+ // set up the network stream using the test receiver
+ val ssc = new StreamingContext(conf, batchDuration)
+ val networkStream = ssc.receiverStream[AnyVal](testReceiver)
+ val outputBuffer = new ArrayBuffer[Seq[AnyVal]]
+ val outputStream = new TestOutputStream(networkStream, outputBuffer)
+ def output = outputBuffer.flatten
+ outputStream.register()
+ ssc.start()
+
+ // Let the data from the receiver be received
+ val clock = ssc.scheduler.clock.asInstanceOf[ManualClock]
+ val startTime = System.currentTimeMillis()
+ while((output.size < limit * 2) &&
+ System.currentTimeMillis() - startTime < 5000) {
+ Thread.sleep(50)
+ clock.addToTime(batchDuration.milliseconds)
+ }
+ Thread.sleep(1000)
+ logInfo("Stopping context")
+ assert(output.size === limit * 2)
+ // Sum would be (sum(1..limit)) * 2 since each number appears twice.
+ assert(output.asInstanceOf[ArrayBuffer[Int]].sum === limit * (limit +
1))
+ ssc.stop()
+ }
test("queue input stream - oneAtATime=true") {
--- End diff --
add extra line here.
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