add missing $ to appUIAddress

Author: tgravescs

core/src/main/scala/org/apache/spark/ui/SparkUI.scala

@@ -117,7 +117,7 @@ private[spark] class SparkUI(
    */
   private[spark] def appUIHostPort = publicHost + ":" + boundPort
 
-  private[spark] def appUIAddress = s"http://appUIHostPort"
+  private[spark] def appUIAddress = s"http://$appUIHostPort"
 
 }
 

core/src/test/scala/org/apache/spark/SparkUISuite.scala

@@ -30,6 +30,6 @@ class SparkUISuite extends FunSuite with SharedSparkContext {
 
   test("verify appUIAddress contains the scheme") {
     val appUIUri = new URI(sc.ui.appUIAddress)
-    assert(appUIUri.getScheme().startsWith("http"))
+    assert(appUIUri.toString().equals("http://" + sc.ui.appUIHostPort))
   }
 }