SPARK-1417: Spark on Yarn - spark UI link from resourcemanager is broken

core/src/main/scala/org/apache/spark/scheduler/cluster/SparkDeploySchedulerBackend.scala

@@ -49,7 +49,7 @@ private[spark] class SparkDeploySchedulerBackend(
       "org.apache.spark.executor.CoarseGrainedExecutorBackend", args, sc.executorEnvs)
     val sparkHome = sc.getSparkHome()
     val appDesc = new ApplicationDescription(sc.appName, maxCores, sc.executorMemory, command,
-      sparkHome, sc.ui.appUIAddress, sc.eventLoggingInfo)
+      sparkHome, "http://" + sc.ui.appUIAddress, sc.eventLoggingInfo)
 
     client = new AppClient(sc.env.actorSystem, masters, appDesc, this, conf)
     client.start()

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

@@ -112,7 +112,10 @@ private[spark] class SparkUI(
     logInfo("Stopped Spark Web UI at %s".format(appUIAddress))
   }
 
-  private[spark] def appUIAddress = "http://" + publicHost + ":" + boundPort
+  /**
+   * Return the application UI address. This does not include the scheme (http://).
+   */
+  private[spark] def appUIAddress = publicHost + ":" + boundPort
 
 }
 

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

@@ -0,0 +1,30 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.spark
+
+import java.net.URI
+
+import org.scalatest.FunSuite
+
+class SparkUISuite extends FunSuite with SharedSparkContext {
+
+  test("verify appUIAddress doesn't contain scheme") {
+    val appUIUri = new URI(sc.ui.appUIAddress) 
+    assert(appUIUri.isAbsolute() == false)
+  }
+}