Use process instead of main as the latter is deprecated.

repl/src/test/scala/spark/repl/ReplSuite.scala

@@ -25,7 +25,7 @@ class ReplSuite extends FunSuite {
     val interp = new SparkILoop(in, new PrintWriter(out), master)
     spark.repl.Main.interp = interp
     val separator = System.getProperty("path.separator")
-    interp.main(Array("-classpath", paths.mkString(separator)))
+    interp.process(Array("-classpath", paths.mkString(separator)))
     spark.repl.Main.interp = null
     if (interp.sparkContext != null)
       interp.sparkContext.stop()