Github user tgravescs commented on a diff in the pull request:

    https://github.com/apache/spark/pull/560#discussion_r13861962
  
    --- Diff: 
yarn/common/src/main/scala/org/apache/spark/deploy/yarn/ClientBase.scala ---
    @@ -464,71 +485,74 @@ object ClientBase extends Logging {
         triedDefault.toOption
       }
     
    +  def populateClasspath(args: ClientArguments, conf: Configuration, 
sparkConf: SparkConf,
    +      env: HashMap[String, String], extraClassPath: Option[String] = None) 
{
    +    extraClassPath.foreach(addClasspathEntry(_, env))
    +    addClasspathEntry(Environment.PWD.$(), env)
    +
    +    // Normally the users app.jar is last in case conflicts with spark jars
    +    if (sparkConf.get("spark.yarn.user.classpath.first", 
"false").toBoolean) {
    +      addUserClasspath(args, sparkConf, env)
    +      addFileToClasspath(sparkJar(sparkConf), SPARK_JAR, env)
    +      ClientBase.populateHadoopClasspath(conf, env)
    +    } else {
    +      addFileToClasspath(sparkJar(sparkConf), SPARK_JAR, env)
    +      ClientBase.populateHadoopClasspath(conf, env)
    +      addUserClasspath(args, sparkConf, env)
    +    }
    +
    +    // Append all class files and jar files under the working directory to 
the classpath.
    +    addFileToClasspath("*", null, env)
    --- End diff --
    
     PWD/* will never be added because its not local:// and alternative name is 
null.  We need to make sure * gets added.


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