Review feedback.

Author: ScrapCodes

core/src/main/scala/org/apache/spark/ui/jobs/AllStagesPage.scala

@@ -33,20 +33,19 @@ private[ui] class AllStagesPage(parent: StagesTab) extends WebUIPage("") {
   def render(request: HttpServletRequest): Seq[Node] = {
     listener.synchronized {
       val activeStages = listener.activeStages.values.toSeq
+      val pendingStages = listener.pendingStages.values.toSeq
       val completedStages = listener.completedStages.reverse.toSeq
       val numCompletedStages = listener.numCompletedStages
       val failedStages = listener.failedStages.reverse.toSeq
       val numFailedStages = listener.numFailedStages
-      val pendingStages = listener.pendingStages.values.toSeq
-      val numWaitingStages = pendingStages.size
       val now = System.currentTimeMillis
 
       val activeStagesTable =
         new StageTableBase(activeStages.sortBy(_.submissionTime).reverse,
           parent.basePath, parent.listener, isFairScheduler = parent.isFairScheduler,
           killEnabled = parent.killEnabled)
       val pendingStagesTable =
-        new StageTableBase(pendingStages.sortBy(_.submissionTime),
+        new StageTableBase(pendingStages.sortBy(_.submissionTime).reverse,
           parent.basePath, parent.listener, isFairScheduler = parent.isFairScheduler,
           killEnabled = false)
       val completedStagesTable =

core/src/main/scala/org/apache/spark/ui/jobs/JobProgressListener.scala

@@ -17,7 +17,7 @@
 
 package org.apache.spark.ui.jobs
 
-import scala.collection.mutable.{HashMap, HashSet, ListBuffer, LinkedHashMap}
+import scala.collection.mutable.{HashMap, HashSet, ListBuffer}
 
 import org.apache.spark._
 import org.apache.spark.annotation.DeveloperApi
@@ -56,7 +56,7 @@ class JobProgressListener(conf: SparkConf) extends SparkListener with Logging {
   val jobIdToData = new HashMap[JobId, JobUIData]
 
   // Stages:
-  val pendingStages = new LinkedHashMap[StageId, StageInfo]
+  val pendingStages = new HashMap[StageId, StageInfo]
   val activeStages = new HashMap[StageId, StageInfo]
   val completedStages = ListBuffer[StageInfo]()
   val skippedStages = ListBuffer[StageInfo]()