java.lang.NoSuchMethodError for "list.toMap".

[Dan Dong]

Hi,
  When I ran with spark-submit the following simple Spark program of:
import org.apache.spark.SparkContext._
import org.apache.spark.SparkConf
import org.apache.spark.rdd.RDD
import org.apache.spark.SparkContext
import org.apache.spark._
import SparkContext._

object TEST2{
def main(args:Array[String])
{
     val conf = new SparkConf().setAppName("TEST")
     val sc=new SparkContext(conf)

     val list=List(("aa",1),("bb",2),("cc",3))
     val maps=list.toMap
  }

}

I got java.lang.NoSuchMethodError for the line of "val maps=list.toMap".
But in a spark-shell or simply scala, it has no problem:

scala> val list=List(("aa",1),("bb",2),("cc",3))
list: List[(String, Int)] = List((aa,1), (bb,2), (cc,3))

scala> val maps=list.toMap
maps: scala.collection.immutable.Map[String,Int] = Map(aa -> 1, bb -> 2, cc
-> 3)

So to use "toMap" method, what am I missing in spark-submit? I use "sbt
package" to compile the program and without problem. Thanks!

Cheers,
Dan