diff --git a/core/src/main/scala/org/apache/spark/ui/UISparkListener.scala b/core/src/main/scala/org/apache/spark/ui/UISparkListener.scala
index fb95ca5cdb5b2..4d109c270548c 100644
--- a/core/src/main/scala/org/apache/spark/ui/UISparkListener.scala
+++ b/core/src/main/scala/org/apache/spark/ui/UISparkListener.scala
@@ -54,8 +54,9 @@ private[ui] class GatewayUISparkListener(parent: SparkUI, sc: SparkContext) exte
   private val logger: Option[FileLogger] = {
     if (sc != null && sc.conf.getBoolean("spark.eventLog.enabled", false)) {
       val logDir = sc.conf.get("spark.eventLog.dir", "/tmp/spark-events")
+      val appName = sc.appName.replaceAll("[ /]", "_").toLowerCase
       val overwrite = sc.conf.getBoolean("spark.eventLog.overwrite", true)
-      Some(new FileLogger(logDir, overwriteExistingFiles = overwrite))
+      Some(new FileLogger(logDir, appName, overwriteExistingFiles = overwrite))
     } else None
   }
 
diff --git a/core/src/main/scala/org/apache/spark/ui/env/EnvironmentUI.scala b/core/src/main/scala/org/apache/spark/ui/env/EnvironmentUI.scala
index c536fde3efc4c..5c3b2216eaa20 100644
--- a/core/src/main/scala/org/apache/spark/ui/env/EnvironmentUI.scala
+++ b/core/src/main/scala/org/apache/spark/ui/env/EnvironmentUI.scala
@@ -31,8 +31,6 @@ import org.apache.spark.ui._
 private[ui] class EnvironmentUI(parent: SparkUI) {
   lazy val appName = parent.appName
   lazy val listener = _listener.get
-  val live = parent.live
-  val sc = parent.sc
 
   private var _listener: Option[EnvironmentListener] = None
 
diff --git a/core/src/main/scala/org/apache/spark/ui/exec/ExecutorsUI.scala b/core/src/main/scala/org/apache/spark/ui/exec/ExecutorsUI.scala
index 854f0c8b70e43..f9a0155afa5af 100644
--- a/core/src/main/scala/org/apache/spark/ui/exec/ExecutorsUI.scala
+++ b/core/src/main/scala/org/apache/spark/ui/exec/ExecutorsUI.scala
@@ -34,8 +34,6 @@ import org.apache.spark.util.Utils
 private[ui] class ExecutorsUI(parent: SparkUI) {
   lazy val appName = parent.appName
   lazy val listener = _listener.get
-  val live = parent.live
-  val sc = parent.sc
 
   private var _listener: Option[ExecutorsListener] = None
 
diff --git a/core/src/main/scala/org/apache/spark/ui/storage/BlockManagerUI.scala b/core/src/main/scala/org/apache/spark/ui/storage/BlockManagerUI.scala
index 4b59c9609045e..73d1dc73066ca 100644
--- a/core/src/main/scala/org/apache/spark/ui/storage/BlockManagerUI.scala
+++ b/core/src/main/scala/org/apache/spark/ui/storage/BlockManagerUI.scala
@@ -28,8 +28,6 @@ import org.apache.spark.ui._
 private[ui] class BlockManagerUI(parent: SparkUI) {
   lazy val appName = parent.appName
   lazy val listener = _listener.get
-  val live = parent.live
-  val sc = parent.sc
 
   private val indexPage = new IndexPage(this)
   private val rddPage = new RDDPage(this)