More minor UI changes including code review feedback.

core/src/main/resources/spark/ui/static/webui.css

@@ -49,6 +49,10 @@
   line-height: 15px !important;
 }
 
+.table-fixed {
+  table-layout:fixed;
+}
+
 .table td {
   vertical-align: middle !important;
 }

core/src/main/scala/spark/deploy/master/ui/IndexPage.scala

@@ -53,7 +53,7 @@ private[spark] class IndexPage(parent: MasterWebUI) {
     val workers = state.workers.sortBy(_.id)
     val workerTable = UIUtils.listingTable(workerHeaders, workerRow, workers)
 
-    val appHeaders = Seq("ID", "Name", "Cores", "Memory per Node", "Launch Time", "User",
+    val appHeaders = Seq("ID", "Name", "Cores", "Memory per Node", "Submitted Time", "User",
       "State", "Duration")
     val activeApps = state.activeApps.sortBy(_.startTime).reverse
     val activeAppsTable = UIUtils.listingTable(appHeaders, appRow, activeApps)

core/src/main/scala/spark/ui/UIUtils.scala

@@ -125,9 +125,21 @@ private[spark] object UIUtils {
   }
 
   /** Returns an HTML table constructed by generating a row for each object in a sequence. */
-  def listingTable[T](headers: Seq[String], makeRow: T => Seq[Node], rows: Seq[T]): Seq[Node] = {
-    <table class="table table-bordered table-striped table-condensed sortable">
-      <thead>{headers.map(h => <th>{h}</th>)}</thead>
+  def listingTable[T](
+      headers: Seq[String],
+      makeRow: T => Seq[Node],
+      rows: Seq[T],
+      fixedWidth: Boolean = false): Seq[Node] = {
+
+    val colWidth = 100.toDouble / headers.size
+    val colWidthAttr = if (fixedWidth) colWidth + "%" else ""
+    var tableClass = "table table-bordered table-striped table-condensed sortable"
+    if (fixedWidth) {
+      tableClass += " table-fixed"
+    }
+
+    <table class={tableClass}>
+      <thead>{headers.map(h => <th width={colWidthAttr}>{h}</th>)}</thead>
       <tbody>
         {rows.map(r => makeRow(r))}
       </tbody>

core/src/main/scala/spark/ui/env/EnvironmentUI.scala

@@ -45,7 +45,8 @@ private[spark] class EnvironmentUI(sc: SparkContext) {
       ("Scala Home", Properties.scalaHome)
     ).sorted
     def jvmRow(kv: (String, String)) = <tr><td>{kv._1}</td><td>{kv._2}</td></tr>
-    def jvmTable = UIUtils.listingTable(Seq("Name", "Value"), jvmRow, jvmInformation)
+    def jvmTable =
+      UIUtils.listingTable(Seq("Name", "Value"), jvmRow, jvmInformation, fixedWidth = true)
 
     val properties = System.getProperties.iterator.toSeq
     val classPathProperty = properties.find { case (k, v) =>
@@ -56,8 +57,10 @@ private[spark] class EnvironmentUI(sc: SparkContext) {
 
     val propertyHeaders = Seq("Name", "Value")
     def propertyRow(kv: (String, String)) = <tr><td>{kv._1}</td><td>{kv._2}</td></tr>
-    val sparkPropertyTable = UIUtils.listingTable(propertyHeaders, propertyRow, sparkProperties)
-    val otherPropertyTable = UIUtils.listingTable(propertyHeaders, propertyRow, otherProperties)
+    val sparkPropertyTable =
+      UIUtils.listingTable(propertyHeaders, propertyRow, sparkProperties, fixedWidth = true)
+    val otherPropertyTable =
+      UIUtils.listingTable(propertyHeaders, propertyRow, otherProperties, fixedWidth = true)
 
     val classPathEntries = classPathProperty._2
         .split(System.getProperty("path.separator", ":"))
@@ -69,17 +72,21 @@ private[spark] class EnvironmentUI(sc: SparkContext) {
 
     val classPathHeaders = Seq("Resource", "Source")
     def classPathRow(data: (String, String)) = <tr><td>{data._1}</td><td>{data._2}</td></tr>
-    val classPathTable = UIUtils.listingTable(classPathHeaders, classPathRow, classPath)
+    val classPathTable =
+      UIUtils.listingTable(classPathHeaders, classPathRow, classPath, fixedWidth = true)
 
     val content =
       <span>
         <h4>Runtime Information</h4> {jvmTable}
         <hr/>
-        <h4>{sparkProperties.size} Spark Properties</h4> {sparkPropertyTable}
+        <h4>{sparkProperties.size} Spark Properties</h4>
+        {sparkPropertyTable}
         <hr/>
-        <h4>{otherProperties.size} System Properties</h4> {otherPropertyTable}
+        <h4>{otherProperties.size} System Properties</h4>
+        {otherPropertyTable}
         <hr/>
-        <h4>{classPath.size} Classpath Entries</h4> {classPathTable}
+        <h4>{classPath.size} Classpath Entries</h4>
+        {classPathTable}
       </span>
 
     UIUtils.headerSparkPage(content, sc, "Environment", Environment)

core/src/main/scala/spark/ui/jobs/PoolTable.scala

@@ -21,7 +21,7 @@ private[spark] class PoolTable(pools: Seq[Schedulable], listener: JobProgressLis
   private def poolTable(makeRow: (Schedulable, HashMap[String, HashSet[Stage]]) => Seq[Node],
     rows: Seq[Schedulable]
     ): Seq[Node] = {
-    <table class="table table-bordered table-striped table-condensed sortable">
+    <table class="table table-bordered table-striped table-condensed sortable table-fixed">
       <thead>
         <th>Pool Name</th>
         <th>Minimum Share</th>

core/src/main/scala/spark/ui/jobs/StagePage.scala

@@ -123,16 +123,16 @@ private[spark] class StagePage(parent: JobProgressUI) {
             if (hasShuffleRead) shuffleReadQuantiles else Nil,
             if (hasShuffleWrite) shuffleWriteQuantiles else Nil)
 
-          val quantileHeaders = Seq("Metric", "Min (0th percentitle)", "25th percentile",
-            "50th percentile", "75th percentile", "Max (100th percentile)")
+          val quantileHeaders = Seq("Metric", "Min", "25th percentile",
+            "Median", "75th percentile", "Max")
           def quantileRow(data: Seq[String]): Seq[Node] = <tr> {data.map(d => <td>{d}</td>)} </tr>
-          Some(listingTable(quantileHeaders, quantileRow, listings))
+          Some(listingTable(quantileHeaders, quantileRow, listings, fixedWidth = true))
         }
 
       val content =
         summary ++
         <h4>Summary Metrics for {numCompleted} Completed Tasks</h4> ++
-        <div>{summaryTable.getOrElse("No tasks have reported their execution metrics yet.")}</div> ++
+        <div>{summaryTable.getOrElse("No tasks have reported metrics yet.")}</div> ++
         <hr/><h4>Tasks</h4> ++ taskTable;
 
       headerSparkPage(content, parent.sc, "Details for Stage %d".format(stageId), Jobs)