Fix strange error messages...

Author: andrewor14

core/src/main/scala/org/apache/spark/deploy/history/HistoryServer.scala

@@ -77,7 +77,7 @@ class HistoryServer(val baseLogDir: String, requestedPort: Int)
       logInfo("Started HistoryServer at http://%s:%d".format(host, boundPort))
     } catch {
       case e: Exception =>
-        logError("Failed to create HistoryServer", e)
+        logError("Failed to bind HistoryServer", e)
         System.exit(1)
     }
     checkForLogs()

core/src/main/scala/org/apache/spark/deploy/master/ui/MasterWebUI.scala

@@ -66,7 +66,7 @@ class MasterWebUI(val master: Master, requestedPort: Int)
       logInfo("Started Master web UI at http://%s:%d".format(host, boundPort))
     } catch {
       case e: Exception =>
-        logError("Failed to create Master JettyUtils", e)
+        logError("Failed to create Master web UI", e)
         System.exit(1)
     }
   }

core/src/main/scala/org/apache/spark/deploy/worker/ui/WorkerWebUI.scala

@@ -64,7 +64,7 @@ class WorkerWebUI(val worker: Worker, val workDir: File, requestedPort: Option[I
       logInfo("Started Worker web UI at http://%s:%d".format(host, boundPort))
     } catch {
       case e: Exception =>
-        logError("Failed to create Worker JettyUtils", e)
+        logError("Failed to create Worker web UI", e)
         System.exit(1)
     }
   }

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

@@ -98,10 +98,10 @@ private[spark] class SparkUI(
   override def bind() {
     try {
       serverInfo = Some(startJettyServer(host, port, handlers, sc.conf))
-      logInfo("Started Spark Web UI at http://%s:%d".format(host, boundPort))
+      logInfo("Started Spark web UI at http://%s:%d".format(host, boundPort))
     } catch {
       case e: Exception =>
-        logError("Failed to create Spark JettyUtils", e)
+        logError("Failed to create Spark web UI", e)
         System.exit(1)
     }
   }