diff --git a/yarn/src/main/scala/org/apache/spark/deploy/yarn/Client.scala b/yarn/src/main/scala/org/apache/spark/deploy/yarn/Client.scala
index de55ede19c516..b6075c87bae73 100644
--- a/yarn/src/main/scala/org/apache/spark/deploy/yarn/Client.scala
+++ b/yarn/src/main/scala/org/apache/spark/deploy/yarn/Client.scala
@@ -56,9 +56,9 @@ import org.apache.spark.{Logging, SecurityManager, SparkConf, SparkContext, Spar
 import org.apache.spark.util.Utils
 
 private[spark] class Client(
-                             val args: ClientArguments,
-                             val hadoopConf: Configuration,
-                             val sparkConf: SparkConf)
+    val args: ClientArguments,
+    val hadoopConf: Configuration,
+    val sparkConf: SparkConf)
   extends Logging {
 
   import Client._
@@ -122,8 +122,8 @@ private[spark] class Client(
    * This uses the YarnClientApplication not available in the Yarn alpha API.
    */
   def createApplicationSubmissionContext(
-                                          newApp: YarnClientApplication,
-                                          containerContext: ContainerLaunchContext): ApplicationSubmissionContext = {
+      newApp: YarnClientApplication,
+      containerContext: ContainerLaunchContext): ApplicationSubmissionContext = {
     val appContext = newApp.getApplicationSubmissionContext
     appContext.setApplicationName(args.appName)
     appContext.setQueue(args.amQueue)
@@ -190,9 +190,9 @@ private[spark] class Client(
    * for preparing resources for launching the ApplicationMaster container. Exposed for testing.
    */
   private[yarn] def copyFileToRemote(
-                                      destDir: Path,
-                                      srcPath: Path,
-                                      replication: Short): Path = {
+      destDir: Path,
+      srcPath: Path,
+      replication: Short): Path = {
     val destFs = destDir.getFileSystem(hadoopConf)
     val srcFs = srcPath.getFileSystem(hadoopConf)
     var destPath = srcPath
@@ -462,7 +462,7 @@ private[spark] class Client(
 
     // Keep this for backwards compatibility but users should move to the config
     sys.env.get("SPARK_YARN_USER_ENV").foreach { userEnvs =>
-      // Allow users to specify some environment variables.
+    // Allow users to specify some environment variables.
       YarnSparkHadoopUtil.setEnvFromInputString(env, userEnvs)
       // Pass SPARK_YARN_USER_ENV itself to the AM so it can use it to set up executor environments.
       env("SPARK_YARN_USER_ENV") = userEnvs
@@ -522,7 +522,7 @@ private[spark] class Client(
    * This sets up the launch environment, java options, and the command for launching the AM.
    */
   private def createContainerLaunchContext(newAppResponse: GetNewApplicationResponse)
-  : ContainerLaunchContext = {
+    : ContainerLaunchContext = {
     logInfo("Setting up container launch context for our AM")
     val appId = newAppResponse.getApplicationId
     val appStagingDir = getAppStagingDir(appId)
@@ -661,14 +661,14 @@ private[spark] class Client(
     val amArgs =
       Seq(amClass) ++ userClass ++ userJar ++ primaryPyFile ++ pyFiles ++ primaryRFile ++
         userArgs ++ Seq(
-        "--executor-memory", args.executorMemory.toString + "m",
-        "--executor-cores", args.executorCores.toString,
-        "--num-executors ", args.numExecutors.toString)
+          "--executor-memory", args.executorMemory.toString + "m",
+          "--executor-cores", args.executorCores.toString,
+          "--num-executors ", args.numExecutors.toString)
 
     // Command for the ApplicationMaster
     val commands = prefixEnv ++ Seq(
-      YarnSparkHadoopUtil.expandEnvironment(Environment.JAVA_HOME) + "/bin/java", "-server"
-    ) ++
+        YarnSparkHadoopUtil.expandEnvironment(Environment.JAVA_HOME) + "/bin/java", "-server"
+      ) ++
       javaOpts ++ amArgs ++
       Seq(
         "1>", ApplicationConstants.LOG_DIR_EXPANSION_VAR + "/stdout",
@@ -728,9 +728,9 @@ private[spark] class Client(
    * @return A pair of the yarn application state and the final application state.
    */
   def monitorApplication(
-                          appId: ApplicationId,
-                          returnOnRunning: Boolean = false,
-                          logApplicationReport: Boolean = true): (YarnApplicationState, FinalApplicationStatus) = {
+      appId: ApplicationId,
+      returnOnRunning: Boolean = false,
+      logApplicationReport: Boolean = true): (YarnApplicationState, FinalApplicationStatus) = {
     val interval = sparkConf.getLong("spark.yarn.report.interval", 1000)
     var lastState: YarnApplicationState = null
     while (true) {
@@ -1085,7 +1085,7 @@ object Client extends Logging {
         val hiveConf = hiveClass.getMethod("getConf").invoke(hive)
         val hiveConfClass = mirror.classLoader.loadClass("org.apache.hadoop.hive.conf.HiveConf")
 
-        val hiveConfGet = (param:String) => Option(hiveConfClass
+        val hiveConfGet = (param: String) => Option(hiveConfClass
           .getMethod("get", classOf[java.lang.String])
           .invoke(hiveConf, param))
 
@@ -1107,7 +1107,7 @@ object Client extends Logging {
 
             val hive2Token = new Token[DelegationTokenIdentifier]()
             hive2Token.decodeFromUrlString(tokenStr)
-            credentials.addToken(new Text("hive.server2.delegation.token"),hive2Token)
+            credentials.addToken(new Text("hive.server2.delegation.token"), hive2Token)
             logDebug("Added hive.Server2.delegation.token to conf.")
             hiveClass.getMethod("closeCurrent").invoke(null)
           } else {
@@ -1152,13 +1152,13 @@ object Client extends Logging {
 
         logInfo("Added HBase security token to credentials.")
       } catch {
-        case e:java.lang.NoSuchMethodException =>
+        case e: java.lang.NoSuchMethodException =>
           logInfo("HBase Method not found: " + e)
-        case e:java.lang.ClassNotFoundException =>
+        case e: java.lang.ClassNotFoundException =>
           logDebug("HBase Class not found: " + e)
-        case e:java.lang.NoClassDefFoundError =>
+        case e: java.lang.NoClassDefFoundError =>
           logDebug("HBase Class not found: " + e)
-        case e:Exception =>
+        case e: Exception =>
           logError("Exception when obtaining HBase security token: " + e)
       }
     }