Error while parallelizing a List[String] taken from Java and used in Scala to create a RDD

Question

var g = Graphx.graph() // return an Object with 2 Lists : List<Edge> edgeArray 
                      //                                  List<String> vertexArray  
val vertexRDD: RDD[(String)] = sc.parallelize(g.vertexArray)

type mismatch;

[error] found : java.util.List[String]

[error] required: Seq[String]

[error] Error occurred in an application involving default arguments.

[error] val vertexRDD: RDD[(String)] = sc.parallelize(g.vertexArray)

Answer 1

You should import the following:

import scala.collection.JavaConverters._

Then use

val vertexRDD: RDD[(String)] = sc.parallelize(g.vertexArray.asScala)