address aaron's comments

core/src/main/scala/org/apache/spark/SparkContext.scala

@@ -19,8 +19,8 @@ package org.apache.spark
 
 import java.io._
 import java.net.URI
-import java.util.{Properties, UUID}
 import java.util.concurrent.atomic.AtomicInteger
+import java.util.{Properties, UUID}
 import java.util.UUID.randomUUID
 import scala.collection.{Map, Set}
 import scala.collection.generic.Growable
@@ -125,7 +125,7 @@ class SparkContext(
 
   val master = conf.get("spark.master")
   val appName = conf.get("spark.app.name")
-  
+
   // Generate the random name for a temp folder in Tachyon
   // Add a timestamp as the suffix here to make it more safe
   val tachyonFolderName = "spark-" + randomUUID.toString()

core/src/main/scala/org/apache/spark/storage/TachyonBlockManager.scala

@@ -36,8 +36,8 @@ import org.apache.spark.util.Utils
  * @param rootDirs The directories to use for storing block files. Data will be hashed among these.
  */
 private[spark] class TachyonBlockManager(
-    shuffleManager: ShuffleBlockManager, 
-    rootDirs: String, 
+    shuffleManager: ShuffleBlockManager,
+    rootDirs: String,
     val master: String)
   extends Logging {
 
@@ -49,21 +49,21 @@ private[spark] class TachyonBlockManager(
   }
 
   private val MAX_DIR_CREATION_ATTEMPTS = 10
-  private val subDirsPerTachyonDir = 
+  private val subDirsPerTachyonDir =
     shuffleManager.conf.get("spark.tachyonStore.subDirectories", "64").toInt
 
-  // Create one Tachyon directory for each path mentioned in spark.tachyonStore.folderName.dir; 
-  // then, inside this directory, create multiple subdirectories that we will hash files into, 
+  // Create one Tachyon directory for each path mentioned in spark.tachyonStore.folderName;
+  // then, inside this directory, create multiple subdirectories that we will hash files into,
   // in order to avoid having really large inodes at the top level in Tachyon.
   private val tachyonDirs: Array[TachyonFile] = createTachyonDirs()
   private val subDirs = Array.fill(tachyonDirs.length)(new Array[TachyonFile](subDirsPerTachyonDir))
 
   addShutdownHook()
-  
+
   def removeFile(file: TachyonFile): Boolean = {
     client.delete(file.getPath(), false)
   }
-  
+
   def fileExists(file: TachyonFile): Boolean = {
     client.exist(file.getPath())
   }