[SPARK-18204][WEBUI] Remove SparkUI.appUIAddress

## What changes were proposed in this pull request?

Removing `appUIAddress` attribute since it is no longer in use.
## How was this patch tested?

Local build

Author: Jacek Laskowski <jacek@japila.pl>

Closes #15603 from jaceklaskowski/sparkui-fixes.

11 files changed, 36 insertions, 44 deletions

diff --git a/core/src/main/scala/org/apache/spark/scheduler/cluster/StandaloneSchedulerBackend.scala b/core/src/main/scala/org/apache/spark/scheduler/cluster/StandaloneSchedulerBackend.scala
index 04d40e2907..368cd30a2e 100644
--- a/core/src/main/scala/org/apache/spark/scheduler/cluster/StandaloneSchedulerBackend.scala
+++ b/core/src/main/scala/org/apache/spark/scheduler/cluster/StandaloneSchedulerBackend.scala
@@ -93,7 +93,7 @@ private[spark] class StandaloneSchedulerBackend(
     val javaOpts = sparkJavaOpts ++ extraJavaOpts
     val command = Command("org.apache.spark.executor.CoarseGrainedExecutorBackend",
       args, sc.executorEnvs, classPathEntries ++ testingClassPath, libraryPathEntries, javaOpts)
-    val appUIAddress = sc.ui.map(_.appUIAddress).getOrElse("")
+    val webUrl = sc.ui.map(_.webUrl).getOrElse("")
     val coresPerExecutor = conf.getOption("spark.executor.cores").map(_.toInt)
     // If we're using dynamic allocation, set our initial executor limit to 0 for now.
     // ExecutorAllocationManager will send the real initial limit to the Master later.
@@ -103,8 +103,8 @@ private[spark] class StandaloneSchedulerBackend(
       } else {
         None
       }
-    val appDesc = new ApplicationDescription(sc.appName, maxCores, sc.executorMemory, command,
-      appUIAddress, sc.eventLogDir, sc.eventLogCodec, coresPerExecutor, initialExecutorLimit)
+    val appDesc = ApplicationDescription(sc.appName, maxCores, sc.executorMemory, command,
+      webUrl, sc.eventLogDir, sc.eventLogCodec, coresPerExecutor, initialExecutorLimit)
     client = new StandaloneAppClient(sc.env.rpcEnv, masters, appDesc, this, conf)
     client.start()
     launcherBackend.setState(SparkAppHandle.State.SUBMITTED)
diff --git a/core/src/main/scala/org/apache/spark/ui/SparkUI.scala b/core/src/main/scala/org/apache/spark/ui/SparkUI.scala
index f631a047a7..b828532aba 100644
--- a/core/src/main/scala/org/apache/spark/ui/SparkUI.scala
+++ b/core/src/main/scala/org/apache/spark/ui/SparkUI.scala
@@ -82,7 +82,7 @@ private[spark] class SparkUI private (
   initialize()
 
   def getSparkUser: String = {
-    environmentListener.systemProperties.toMap.get("user.name").getOrElse("<unknown>")
+    environmentListener.systemProperties.toMap.getOrElse("user.name", "<unknown>")
   }
 
   def getAppName: String = appName
@@ -94,16 +94,9 @@ private[spark] class SparkUI private (
   /** Stop the server behind this web interface. Only valid after bind(). */
   override def stop() {
     super.stop()
-    logInfo("Stopped Spark web UI at %s".format(appUIAddress))
+    logInfo(s"Stopped Spark web UI at $webUrl")
   }
 
-  /**
-   * Return the application UI host:port. This does not include the scheme (http://).
-   */
-  private[spark] def appUIHostPort = publicHostName + ":" + boundPort
-
-  private[spark] def appUIAddress = s"http://$appUIHostPort"
-
   def getSparkUI(appId: String): Option[SparkUI] = {
     if (appId == this.appId) Some(this) else None
   }
@@ -136,7 +129,7 @@ private[spark] class SparkUI private (
 private[spark] abstract class SparkUITab(parent: SparkUI, prefix: String)
   extends WebUITab(parent, prefix) {
 
-  def appName: String = parent.getAppName
+  def appName: String = parent.appName
 
 }
 
diff --git a/core/src/main/scala/org/apache/spark/ui/WebUI.scala b/core/src/main/scala/org/apache/spark/ui/WebUI.scala
index a05e0efb7a..8c80155867 100644
--- a/core/src/main/scala/org/apache/spark/ui/WebUI.scala
+++ b/core/src/main/scala/org/apache/spark/ui/WebUI.scala
@@ -56,8 +56,8 @@ private[spark] abstract class WebUI(
   private val className = Utils.getFormattedClassName(this)
 
   def getBasePath: String = basePath
-  def getTabs: Seq[WebUITab] = tabs.toSeq
-  def getHandlers: Seq[ServletContextHandler] = handlers.toSeq
+  def getTabs: Seq[WebUITab] = tabs
+  def getHandlers: Seq[ServletContextHandler] = handlers
   def getSecurityManager: SecurityManager = securityManager
 
   /** Attach a tab to this UI, along with all of its attached pages. */
@@ -133,7 +133,7 @@ private[spark] abstract class WebUI(
   def initialize(): Unit
 
   /** Bind to the HTTP server behind this web interface. */
-  def bind() {
+  def bind(): Unit = {
     assert(!serverInfo.isDefined, s"Attempted to bind $className more than once!")
     try {
       val host = Option(conf.getenv("SPARK_LOCAL_IP")).getOrElse("0.0.0.0")
@@ -156,7 +156,7 @@ private[spark] abstract class WebUI(
   def boundPort: Int = serverInfo.map(_.boundPort).getOrElse(-1)
 
   /** Stop the server behind this web interface. Only valid after bind(). */
-  def stop() {
+  def stop(): Unit = {
     assert(serverInfo.isDefined,
       s"Attempted to stop $className before binding to a server!")
     serverInfo.get.stop()
diff --git a/core/src/main/scala/org/apache/spark/ui/jobs/AllJobsPage.scala b/core/src/main/scala/org/apache/spark/ui/jobs/AllJobsPage.scala
index 173fc3cf31..50e8e2d19e 100644
--- a/core/src/main/scala/org/apache/spark/ui/jobs/AllJobsPage.scala
+++ b/core/src/main/scala/org/apache/spark/ui/jobs/AllJobsPage.scala
@@ -289,8 +289,8 @@ private[ui] class AllJobsPage(parent: JobsTab) extends WebUIPage("") {
       val startTime = listener.startTime
       val endTime = listener.endTime
       val activeJobs = listener.activeJobs.values.toSeq
-      val completedJobs = listener.completedJobs.reverse.toSeq
-      val failedJobs = listener.failedJobs.reverse.toSeq
+      val completedJobs = listener.completedJobs.reverse
+      val failedJobs = listener.failedJobs.reverse
 
       val activeJobsTable =
         jobsTable(request, "active", "activeJob", activeJobs, killEnabled = parent.killEnabled)
diff --git a/core/src/test/scala/org/apache/spark/ui/UISeleniumSuite.scala b/core/src/test/scala/org/apache/spark/ui/UISeleniumSuite.scala
index e5d408a167..f4786e3931 100644
--- a/core/src/test/scala/org/apache/spark/ui/UISeleniumSuite.scala
+++ b/core/src/test/scala/org/apache/spark/ui/UISeleniumSuite.scala
@@ -473,7 +473,7 @@ class UISeleniumSuite extends SparkFunSuite with WebBrowser with Matchers with B
       sc.parallelize(1 to 10).map{x => Thread.sleep(10000); x}.countAsync()
       eventually(timeout(5 seconds), interval(50 milliseconds)) {
         val url = new URL(
-          sc.ui.get.appUIAddress.stripSuffix("/") + "/stages/stage/kill/?id=0")
+          sc.ui.get.webUrl.stripSuffix("/") + "/stages/stage/kill/?id=0")
         // SPARK-6846: should be POST only but YARN AM doesn't proxy POST
         getResponseCode(url, "GET") should be (200)
         getResponseCode(url, "POST") should be (200)
@@ -486,7 +486,7 @@ class UISeleniumSuite extends SparkFunSuite with WebBrowser with Matchers with B
       sc.parallelize(1 to 10).map{x => Thread.sleep(10000); x}.countAsync()
       eventually(timeout(5 seconds), interval(50 milliseconds)) {
         val url = new URL(
-          sc.ui.get.appUIAddress.stripSuffix("/") + "/jobs/job/kill/?id=0")
+          sc.ui.get.webUrl.stripSuffix("/") + "/jobs/job/kill/?id=0")
         // SPARK-6846: should be POST only but YARN AM doesn't proxy POST
         getResponseCode(url, "GET") should be (200)
         getResponseCode(url, "POST") should be (200)
@@ -620,7 +620,7 @@ class UISeleniumSuite extends SparkFunSuite with WebBrowser with Matchers with B
   test("live UI json application list") {
     withSpark(newSparkContext()) { sc =>
       val appListRawJson = HistoryServerSuite.getUrl(new URL(
-        sc.ui.get.appUIAddress + "/api/v1/applications"))
+        sc.ui.get.webUrl + "/api/v1/applications"))
       val appListJsonAst = JsonMethods.parse(appListRawJson)
       appListJsonAst.children.length should be (1)
       val attempts = (appListJsonAst \ "attempts").children
@@ -640,7 +640,7 @@ class UISeleniumSuite extends SparkFunSuite with WebBrowser with Matchers with B
         sc.parallelize(Seq(1, 2, 3)).map(identity).groupBy(identity).map(identity).groupBy(identity)
       rdd.count()
 
-      val stage0 = Source.fromURL(sc.ui.get.appUIAddress +
+      val stage0 = Source.fromURL(sc.ui.get.webUrl +
         "/stages/stage/?id=0&attempt=0&expandDagViz=true").mkString
       assert(stage0.contains("digraph G {\n  subgraph clusterstage_0 {\n    " +
         "label=&quot;Stage 0&quot;;\n    subgraph "))
@@ -651,7 +651,7 @@ class UISeleniumSuite extends SparkFunSuite with WebBrowser with Matchers with B
       assert(stage0.contains("{\n      label=&quot;groupBy&quot;;\n      " +
         "2 [label=&quot;MapPartitionsRDD [2]"))
 
-      val stage1 = Source.fromURL(sc.ui.get.appUIAddress +
+      val stage1 = Source.fromURL(sc.ui.get.webUrl +
         "/stages/stage/?id=1&attempt=0&expandDagViz=true").mkString
       assert(stage1.contains("digraph G {\n  subgraph clusterstage_1 {\n    " +
         "label=&quot;Stage 1&quot;;\n    subgraph "))
@@ -662,7 +662,7 @@ class UISeleniumSuite extends SparkFunSuite with WebBrowser with Matchers with B
       assert(stage1.contains("{\n      label=&quot;groupBy&quot;;\n      " +
         "5 [label=&quot;MapPartitionsRDD [5]"))
 
-      val stage2 = Source.fromURL(sc.ui.get.appUIAddress +
+      val stage2 = Source.fromURL(sc.ui.get.webUrl +
         "/stages/stage/?id=2&attempt=0&expandDagViz=true").mkString
       assert(stage2.contains("digraph G {\n  subgraph clusterstage_2 {\n    " +
         "label=&quot;Stage 2&quot;;\n    subgraph "))
@@ -687,7 +687,7 @@ class UISeleniumSuite extends SparkFunSuite with WebBrowser with Matchers with B
   }
 
   def goToUi(ui: SparkUI, path: String): Unit = {
-    go to (ui.appUIAddress.stripSuffix("/") + path)
+    go to (ui.webUrl.stripSuffix("/") + path)
   }
 
   def parseDate(json: JValue): Long = {
@@ -699,6 +699,6 @@ class UISeleniumSuite extends SparkFunSuite with WebBrowser with Matchers with B
   }
 
   def apiUrl(ui: SparkUI, path: String): URL = {
-    new URL(ui.appUIAddress + "/api/v1/applications/" + ui.sc.get.applicationId + "/" + path)
+    new URL(ui.webUrl + "/api/v1/applications/" + ui.sc.get.applicationId + "/" + path)
   }
 }
diff --git a/core/src/test/scala/org/apache/spark/ui/UISuite.scala b/core/src/test/scala/org/apache/spark/ui/UISuite.scala
index 4abcfb7e51..68c7657cb3 100644
--- a/core/src/test/scala/org/apache/spark/ui/UISuite.scala
+++ b/core/src/test/scala/org/apache/spark/ui/UISuite.scala
@@ -66,7 +66,7 @@ class UISuite extends SparkFunSuite {
     withSpark(newSparkContext()) { sc =>
       // test if the ui is visible, and all the expected tabs are visible
       eventually(timeout(10 seconds), interval(50 milliseconds)) {
-        val html = Source.fromURL(sc.ui.get.appUIAddress).mkString
+        val html = Source.fromURL(sc.ui.get.webUrl).mkString
         assert(!html.contains("random data that should not be present"))
         assert(html.toLowerCase.contains("stages"))
         assert(html.toLowerCase.contains("storage"))
@@ -176,19 +176,18 @@ class UISuite extends SparkFunSuite {
     }
   }
 
-  test("verify appUIAddress contains the scheme") {
+  test("verify webUrl contains the scheme") {
     withSpark(newSparkContext()) { sc =>
       val ui = sc.ui.get
-      val uiAddress = ui.appUIAddress
-      val uiHostPort = ui.appUIHostPort
-      assert(uiAddress.equals("http://" + uiHostPort))
+      val uiAddress = ui.webUrl
+      assert(uiAddress.startsWith("http://") || uiAddress.startsWith("https://"))
     }
   }
 
-  test("verify appUIAddress contains the port") {
+  test("verify webUrl contains the port") {
     withSpark(newSparkContext()) { sc =>
       val ui = sc.ui.get
-      val splitUIAddress = ui.appUIAddress.split(':')
+      val splitUIAddress = ui.webUrl.split(':')
       val boundPort = ui.boundPort
       assert(splitUIAddress(2).toInt == boundPort)
     }
diff --git a/mesos/src/main/scala/org/apache/spark/scheduler/cluster/mesos/MesosCoarseGrainedSchedulerBackend.scala b/mesos/src/main/scala/org/apache/spark/scheduler/cluster/mesos/MesosCoarseGrainedSchedulerBackend.scala
index 5063c1fe98..842c05e7bf 100644
--- a/mesos/src/main/scala/org/apache/spark/scheduler/cluster/mesos/MesosCoarseGrainedSchedulerBackend.scala
+++ b/mesos/src/main/scala/org/apache/spark/scheduler/cluster/mesos/MesosCoarseGrainedSchedulerBackend.scala
@@ -158,7 +158,7 @@ private[spark] class MesosCoarseGrainedSchedulerBackend(
       sc.sparkUser,
       sc.appName,
       sc.conf,
-      sc.conf.getOption("spark.mesos.driver.webui.url").orElse(sc.ui.map(_.appUIAddress)),
+      sc.conf.getOption("spark.mesos.driver.webui.url").orElse(sc.ui.map(_.webUrl)),
       None,
       None,
       sc.conf.getOption("spark.mesos.driver.frameworkId")
diff --git a/mesos/src/main/scala/org/apache/spark/scheduler/cluster/mesos/MesosFineGrainedSchedulerBackend.scala b/mesos/src/main/scala/org/apache/spark/scheduler/cluster/mesos/MesosFineGrainedSchedulerBackend.scala
index 09a252f3c7..c1aa00151e 100644
--- a/mesos/src/main/scala/org/apache/spark/scheduler/cluster/mesos/MesosFineGrainedSchedulerBackend.scala
+++ b/mesos/src/main/scala/org/apache/spark/scheduler/cluster/mesos/MesosFineGrainedSchedulerBackend.scala
@@ -77,7 +77,7 @@ private[spark] class MesosFineGrainedSchedulerBackend(
       sc.sparkUser,
       sc.appName,
       sc.conf,
-      sc.conf.getOption("spark.mesos.driver.webui.url").orElse(sc.ui.map(_.appUIAddress)),
+      sc.conf.getOption("spark.mesos.driver.webui.url").orElse(sc.ui.map(_.webUrl)),
       Option.empty,
       Option.empty,
       sc.conf.getOption("spark.mesos.driver.frameworkId")
diff --git a/streaming/src/test/scala/org/apache/spark/streaming/UISeleniumSuite.scala b/streaming/src/test/scala/org/apache/spark/streaming/UISeleniumSuite.scala
index 454c3dffa3..e7cec999c2 100644
--- a/streaming/src/test/scala/org/apache/spark/streaming/UISeleniumSuite.scala
+++ b/streaming/src/test/scala/org/apache/spark/streaming/UISeleniumSuite.scala
@@ -92,13 +92,13 @@ class UISeleniumSuite
       val sparkUI = ssc.sparkContext.ui.get
 
       eventually(timeout(10 seconds), interval(50 milliseconds)) {
-        go to (sparkUI.appUIAddress.stripSuffix("/"))
+        go to (sparkUI.webUrl.stripSuffix("/"))
         find(cssSelector( """ul li a[href*="streaming"]""")) should not be (None)
       }
 
       eventually(timeout(10 seconds), interval(50 milliseconds)) {
         // check whether streaming page exists
-        go to (sparkUI.appUIAddress.stripSuffix("/") + "/streaming")
+        go to (sparkUI.webUrl.stripSuffix("/") + "/streaming")
         val h3Text = findAll(cssSelector("h3")).map(_.text).toSeq
         h3Text should contain("Streaming Statistics")
 
@@ -180,23 +180,23 @@ class UISeleniumSuite
         jobDetails should contain("Completed Stages:")
 
         // Check a batch page without id
-        go to (sparkUI.appUIAddress.stripSuffix("/") + "/streaming/batch/")
+        go to (sparkUI.webUrl.stripSuffix("/") + "/streaming/batch/")
         webDriver.getPageSource should include ("Missing id parameter")
 
         // Check a non-exist batch
-        go to (sparkUI.appUIAddress.stripSuffix("/") + "/streaming/batch/?id=12345")
+        go to (sparkUI.webUrl.stripSuffix("/") + "/streaming/batch/?id=12345")
         webDriver.getPageSource should include ("does not exist")
       }
 
       ssc.stop(false)
 
       eventually(timeout(10 seconds), interval(50 milliseconds)) {
-        go to (sparkUI.appUIAddress.stripSuffix("/"))
+        go to (sparkUI.webUrl.stripSuffix("/"))
         find(cssSelector( """ul li a[href*="streaming"]""")) should be(None)
       }
 
       eventually(timeout(10 seconds), interval(50 milliseconds)) {
-        go to (sparkUI.appUIAddress.stripSuffix("/") + "/streaming")
+        go to (sparkUI.webUrl.stripSuffix("/") + "/streaming")
         val h3Text = findAll(cssSelector("h3")).map(_.text).toSeq
         h3Text should not contain("Streaming Statistics")
       }
diff --git a/yarn/src/main/scala/org/apache/spark/deploy/yarn/ApplicationMaster.scala b/yarn/src/main/scala/org/apache/spark/deploy/yarn/ApplicationMaster.scala
index aabae140af..f2b9dfb4d1 100644
--- a/yarn/src/main/scala/org/apache/spark/deploy/yarn/ApplicationMaster.scala
+++ b/yarn/src/main/scala/org/apache/spark/deploy/yarn/ApplicationMaster.scala
@@ -406,7 +406,7 @@ private[spark] class ApplicationMaster(
           sc.getConf.get("spark.driver.host"),
           sc.getConf.get("spark.driver.port"),
           isClusterMode = true)
-        registerAM(sc.getConf, rpcEnv, driverRef, sc.ui.map(_.appUIAddress).getOrElse(""),
+        registerAM(sc.getConf, rpcEnv, driverRef, sc.ui.map(_.webUrl).getOrElse(""),
           securityMgr)
       } else {
         // Sanity check; should never happen in normal operation, since sc should only be null
diff --git a/yarn/src/main/scala/org/apache/spark/scheduler/cluster/YarnClientSchedulerBackend.scala b/yarn/src/main/scala/org/apache/spark/scheduler/cluster/YarnClientSchedulerBackend.scala
index d8b36c5fea..60da356ad1 100644
--- a/yarn/src/main/scala/org/apache/spark/scheduler/cluster/YarnClientSchedulerBackend.scala
+++ b/yarn/src/main/scala/org/apache/spark/scheduler/cluster/YarnClientSchedulerBackend.scala
@@ -44,7 +44,7 @@ private[spark] class YarnClientSchedulerBackend(
     val driverHost = conf.get("spark.driver.host")
     val driverPort = conf.get("spark.driver.port")
     val hostport = driverHost + ":" + driverPort
-    sc.ui.foreach { ui => conf.set("spark.driver.appUIAddress", ui.appUIAddress) }
+    sc.ui.foreach { ui => conf.set("spark.driver.appUIAddress", ui.webUrl) }
 
     val argsArrayBuf = new ArrayBuffer[String]()
     argsArrayBuf += ("--arg", hostport)