Github user liancheng commented on a diff in the pull request:
https://github.com/apache/spark/pull/2765#discussion_r19327511
--- Diff:
streaming/src/test/scala/org/apache/spark/streaming/InputStreamsSuite.scala ---
@@ -141,6 +141,108 @@ class InputStreamsSuite extends TestSuiteBase with
BeforeAndAfter {
conf.set("spark.streaming.clock",
"org.apache.spark.streaming.util.ManualClock")
}
+ test("file input stream - depth = 1") {
+ // Disable manual clock as FileInputDStream does not work with manual
clock
+ conf.set("spark.streaming.clock",
"org.apache.spark.streaming.util.SystemClock")
+
+ // Set up the streaming context and input streams
+ val testDir = Utils.createTempDir()
+ val subDir = Utils.createTempDir(testDir.toString)
+ val ssc = new StreamingContext(conf, batchDuration)
+ val fileStream = ssc.textFileStream(testDir.toString,1)
+ val outputBuffer = new ArrayBuffer[Seq[String]] with
SynchronizedBuffer[Seq[String]]
+ def output = outputBuffer.flatMap(x => x)
+ val outputStream = new TestOutputStream(fileStream, outputBuffer)
+ outputStream.register()
+ ssc.start()
+
+ // Create files in the temporary directory so that Spark Streaming can
read data from it
+ val input = Seq(1, 2, 3, 4, 5)
+ val expectedOutput = input.map(_.toString)
+ Thread.sleep(1000)
+ for (i <- 0 until input.size) {
+ val file = new File(subDir, i.toString)
+ Files.write(input(i) + "\n", file, Charset.forName("UTF-8"))
+ logInfo("Created file " + file)
+ Thread.sleep(batchDuration.milliseconds)
+ Thread.sleep(1000)
+ }
+ val startTime = System.currentTimeMillis()
+ Thread.sleep(1000)
+ val timeTaken = System.currentTimeMillis() - startTime
+ assert(timeTaken < maxWaitTimeMillis, "Operation timed out after " +
timeTaken + " ms")
+ logInfo("Stopping context")
+ ssc.stop()
+
+ // Verify whether data received by Spark Streaming was as expected
+ logInfo("--------------------------------")
+ logInfo("output, size = " + outputBuffer.size)
+ outputBuffer.foreach(x => logInfo("[" + x.mkString(",") + "]"))
+ logInfo("expected output, size = " + expectedOutput.size)
+ expectedOutput.foreach(x => logInfo("[" + x.mkString(",") + "]"))
+ logInfo("--------------------------------")
+
+ // Verify whether all the elements received are as expected
+ // (whether the elements were received one in each interval is not
verified)
+ assert(output.toList === expectedOutput.toList)
+
+ Utils.deleteRecursively(testDir)
+
+ // Enable manual clock back again for other tests
+ conf.set("spark.streaming.clock",
"org.apache.spark.streaming.util.ManualClock")
+ }
+
+ test("file input stream - depth = 2") {
--- End diff --
One redundant space before `-` :)
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