[SPARK-9030] [STREAMING] [HOTFIX] Make sure that no attempts to create Kinesis...

[SPARK-9030] [STREAMING] [HOTFIX] Make sure that no attempts to create Kinesis streams is made when no enabled

Problem: Even when the environment variable to enable tests are disabled, the `beforeAll` of the KinesisStreamSuite attempted to find AWS credentials to create Kinesis stream, and failed.

Solution: Made sure all accesses to KinesisTestUtils, that created streams, is under `testOrIgnore`

Author: Tathagata Das <tathagata.das1565@gmail.com>

Closes #7519 from tdas/kinesis-tests and squashes the following commits:

64d6d06 [Tathagata Das] Removed empty lines.
7c18473 [Tathagata Das] Putting all access to KinesisTestUtils inside testOrIgnore

extras/kinesis-asl/src/test/scala/org/apache/spark/streaming/kinesis/KinesisStreamSuite.scala

@@ -33,8 +33,6 @@ import org.apache.spark.{SparkConf, SparkContext, SparkFunSuite}
 class KinesisStreamSuite extends SparkFunSuite with KinesisSuiteHelper
   with Eventually with BeforeAndAfter with BeforeAndAfterAll {
 
-  private val kinesisTestUtils = new KinesisTestUtils()
-
   // This is the name that KCL uses to save metadata to DynamoDB
   private val kinesisAppName = s"KinesisStreamSuite-${math.abs(Random.nextLong())}"
 
@@ -42,7 +40,6 @@ class KinesisStreamSuite extends SparkFunSuite with KinesisSuiteHelper
   private var sc: SparkContext = _
 
   override def beforeAll(): Unit = {
-    kinesisTestUtils.createStream()
     val conf = new SparkConf()
       .setMaster("local[4]")
       .setAppName("KinesisStreamSuite") // Setting Spark app name to Kinesis app name
@@ -53,15 +50,6 @@ class KinesisStreamSuite extends SparkFunSuite with KinesisSuiteHelper
     sc.stop()
     // Delete the Kinesis stream as well as the DynamoDB table generated by
     // Kinesis Client Library when consuming the stream
-    kinesisTestUtils.deleteStream()
-    kinesisTestUtils.deleteDynamoDBTable(kinesisAppName)
-  }
-
-  before {
-    // Delete the DynamoDB table generated by Kinesis Client Library when
-    // consuming from the stream, so that each unit test can start from
-    // scratch without prior history of data consumption
-    kinesisTestUtils.deleteDynamoDBTable(kinesisAppName)
   }
 
   after {
@@ -96,25 +84,32 @@ class KinesisStreamSuite extends SparkFunSuite with KinesisSuiteHelper
    * and you have to set the system environment variable RUN_KINESIS_TESTS=1 .
    */
   testOrIgnore("basic operation") {
-    ssc = new StreamingContext(sc, Seconds(1))
-    val aWSCredentials = KinesisTestUtils.getAWSCredentials()
-    val stream = KinesisUtils.createStream(ssc, kinesisAppName, kinesisTestUtils.streamName,
-      kinesisTestUtils.endpointUrl, kinesisTestUtils.regionName, InitialPositionInStream.LATEST,
-      Seconds(10), StorageLevel.MEMORY_ONLY,
-      aWSCredentials.getAWSAccessKeyId, aWSCredentials.getAWSSecretKey)
-
-    val collected = new mutable.HashSet[Int] with mutable.SynchronizedSet[Int]
-    stream.map { bytes => new String(bytes).toInt }.foreachRDD { rdd =>
-      collected ++= rdd.collect()
-      logInfo("Collected = " + rdd.collect().toSeq.mkString(", "))
-    }
-    ssc.start()
-
-    val testData = 1 to 10
-    eventually(timeout(120 seconds), interval(10 second)) {
-      kinesisTestUtils.pushData(testData)
-      assert(collected === testData.toSet, "\nData received does not match data sent")
+    val kinesisTestUtils = new KinesisTestUtils()
+    try {
+      kinesisTestUtils.createStream()
+      ssc = new StreamingContext(sc, Seconds(1))
+      val aWSCredentials = KinesisTestUtils.getAWSCredentials()
+      val stream = KinesisUtils.createStream(ssc, kinesisAppName, kinesisTestUtils.streamName,
+        kinesisTestUtils.endpointUrl, kinesisTestUtils.regionName, InitialPositionInStream.LATEST,
+        Seconds(10), StorageLevel.MEMORY_ONLY,
+        aWSCredentials.getAWSAccessKeyId, aWSCredentials.getAWSSecretKey)
+
+      val collected = new mutable.HashSet[Int] with mutable.SynchronizedSet[Int]
+      stream.map { bytes => new String(bytes).toInt }.foreachRDD { rdd =>
+        collected ++= rdd.collect()
+        logInfo("Collected = " + rdd.collect().toSeq.mkString(", "))
+      }
+      ssc.start()
+
+      val testData = 1 to 10
+      eventually(timeout(120 seconds), interval(10 second)) {
+        kinesisTestUtils.pushData(testData)
+        assert(collected === testData.toSet, "\nData received does not match data sent")
+      }
+      ssc.stop()
+    } finally {
+      kinesisTestUtils.deleteStream()
+      kinesisTestUtils.deleteDynamoDBTable(kinesisAppName)
     }
-    ssc.stop()
   }
 }