Spark scala code change for request addressed

Author: chetkhatri

examples/src/main/scala/org/apache/spark/examples/graphx/Analytics.scala

@@ -145,9 +145,11 @@ object Analytics extends Logging {
           // TriangleCount requires the graph to be partitioned
           .partitionBy(partitionStrategy.getOrElse(RandomVertexCut)).cache()
         val triangles = TriangleCount.run(graph)
-        println(s"Triangles: ${triangles.vertices.map {
+        val triangleTypes = triangles.vertices.map {
           case (vid, data) => data.toLong
-        }.reduce(_ + _) / 3}")
+        }.reduce(_ + _) / 3
+
+        println(s"Triangles: ${triangleTypes}")
         sc.stop()
 
       case _ =>

examples/src/main/scala/org/apache/spark/examples/ml/CorrelationExample.scala

@@ -51,10 +51,10 @@ object CorrelationExample {
 
     val df = data.map(Tuple1.apply).toDF("features")
     val Row(coeff1: Matrix) = Correlation.corr(df, "features").head
-    println(s"Pearson correlation matrix:\n ${coeff1.toString}")
+    println(s"Pearson correlation matrix:\n $coeff1")
 
     val Row(coeff2: Matrix) = Correlation.corr(df, "features", "spearman").head
-    println(s"Spearman correlation matrix:\n ${coeff2.toString}")
+    println(s"Spearman correlation matrix:\n $coeff2")
     // $example off$
 
     spark.stop()

examples/src/main/scala/org/apache/spark/examples/ml/QuantileDiscretizerExample.scala

@@ -31,11 +31,12 @@ object QuantileDiscretizerExample {
 
     // $example on$
     val data = Array((0, 18.0), (1, 19.0), (2, 8.0), (3, 5.0), (4, 2.2))
-    val df = spark.createDataFrame(data).toDF("id", "hour").repartition(1)
+    val df = spark.createDataFrame(data).toDF("id", "hour")
     // $example off$
     // Output of QuantileDiscretizer for such small datasets can depend on the number of
     // partitions. Here we force a single partition to ensure consistent results.
     // Note this is not necessary for normal use cases
+      .repartition(1)
 
     // $example on$
     val discretizer = new QuantileDiscretizer()

examples/src/main/scala/org/apache/spark/examples/streaming/CustomReceiver.scala

@@ -82,7 +82,7 @@ class CustomReceiver(host: String, port: Int)
    var socket: Socket = null
    var userInput: String = null
    try {
-     logInfo(s"Connecting to $host $port")
+     logInfo(s"Connecting to $host : $port")
      socket = new Socket(host, port)
      logInfo(s"Connected to $host : $port")
      val reader = new BufferedReader(