SparkEnv isn't available this early, and not needed anyway

core/src/main/scala/spark/deploy/SparkHadoopUtil.scala

@@ -25,17 +25,6 @@ import org.apache.hadoop.mapred.JobConf
  */
 class SparkHadoopUtil {
 
-  def getUserNameFromEnvironment(): String = {
-    // defaulting to -D ...
-    System.getProperty("user.name")
-  }
-
-  def runAsUser(func: (Product) => Unit, args: Product) {
-
-    // Add support, if exists - for now, simply run func !
-    func(args)
-  }
-
   // Return an appropriate (subclass) of Configuration. Creating config can initializes some hadoop subsystems
   def newConfiguration(): Configuration = new Configuration()
 

core/src/main/scala/spark/executor/StandaloneExecutorBackend.scala

@@ -81,20 +81,6 @@ private[spark] class StandaloneExecutorBackend(
 
 private[spark] object StandaloneExecutorBackend {
   def run(driverUrl: String, executorId: String, hostname: String, cores: Int) {
-    val env = SparkEnv.get
-    env.hadoop.runAsUser(run0, Tuple4[Any, Any, Any, Any] (driverUrl, executorId, hostname, cores))
-  }
-
-  // This will be run 'as' the user
-  def run0(args: Product) {
-    assert(4 == args.productArity)
-    runImpl(args.productElement(0).asInstanceOf[String], 
-      args.productElement(1).asInstanceOf[String],
-      args.productElement(2).asInstanceOf[String],
-      args.productElement(3).asInstanceOf[Int])
-  }
-  
-  private def runImpl(driverUrl: String, executorId: String, hostname: String, cores: Int) {
     // Debug code
     Utils.checkHost(hostname)
 

yarn/src/main/scala/spark/deploy/SparkHadoopUtil.scala

@@ -32,22 +32,6 @@ object SparkHadoopUtil {
 
   val yarnConf = newConfiguration()
 
-  def getUserNameFromEnvironment(): String = {
-    // defaulting to env if -D is not present ...
-    val retval = System.getProperty(Environment.USER.name, System.getenv(Environment.USER.name))
-
-    // If nothing found, default to user we are running as
-    if (retval == null) System.getProperty("user.name") else retval
-  }
-
-  def runAsUser(func: (Product) => Unit, args: Product) {
-    runAsUser(func, args, getUserNameFromEnvironment())
-  }
-
-  def runAsUser(func: (Product) => Unit, args: Product, user: String) {
-    func(args)
-  }
-
   // Note that all params which start with SPARK are propagated all the way through, so if in yarn mode, this MUST be set to true.
   def isYarnMode(): Boolean = {
     val yarnMode = System.getProperty("SPARK_YARN_MODE", System.getenv("SPARK_YARN_MODE"))