Minor cleanups

Author: andrewor14

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

@@ -917,7 +917,7 @@ class SparkContext(config: SparkConf) extends Logging {
             if (SparkHadoopUtil.get.isYarnMode() &&
                 (master == "yarn-standalone" || master == "yarn-cluster")) {
               // In order for this to work in yarn-cluster mode the user must specify the
-              // --addjars option to the client to upload the file into the distributed cache
+              // --addJars option to the client to upload the file into the distributed cache
               // of the AM to make it show up in the current working directory.
               val fileName = new Path(uri.getPath).getName()
               try {

yarn/common/src/main/scala/org/apache/spark/deploy/yarn/ClientArguments.scala

@@ -20,7 +20,7 @@ package org.apache.spark.deploy.yarn
 import scala.collection.mutable.{ArrayBuffer, HashMap}
 
 import org.apache.spark.SparkConf
-import org.apache.spark.scheduler.{InputFormatInfo, SplitInfo}
+import org.apache.spark.scheduler.InputFormatInfo
 import org.apache.spark.util.IntParam
 import org.apache.spark.util.MemoryParam
 
@@ -40,9 +40,7 @@ class ClientArguments(val args: Array[String], val sparkConf: SparkConf) {
   var amMemory: Int = 512 // MB
   var amClass: String = "org.apache.spark.deploy.yarn.ApplicationMaster"
   var appName: String = "Spark"
-  // TODO
   var inputFormatInfo: List[InputFormatInfo] = null
-  // TODO(harvey)
   var priority = 0
 
   parseArgs(args.toList)