Create SparkContext in beforeAll for MLLib tests

This overcomes test failures that occur using Maven

mllib/src/test/scala/spark/mllib/classification/LogisticRegressionSuite.scala

@@ -67,7 +67,12 @@ object LogisticRegressionSuite {
 }
 
 class LogisticRegressionSuite extends FunSuite with BeforeAndAfterAll with ShouldMatchers {
-  val sc = new SparkContext("local", "test")
+  @transient private var sc: SparkContext = _
+
+  override def beforeAll() {
+    sc = new SparkContext("local", "test")
+  }
+
 
   override def afterAll() {
     sc.stop()

mllib/src/test/scala/spark/mllib/classification/SVMSuite.scala

@@ -62,7 +62,11 @@ object SVMSuite {
 }
 
 class SVMSuite extends FunSuite with BeforeAndAfterAll {
-  val sc = new SparkContext("local", "test")
+  @transient private var sc: SparkContext = _
+
+  override def beforeAll() {
+    sc = new SparkContext("local", "test")
+  }
 
   override def afterAll() {
     sc.stop()

mllib/src/test/scala/spark/mllib/clustering/KMeansSuite.scala

@@ -27,9 +27,12 @@ import spark.SparkContext._
 
 import org.jblas._
 
-
 class KMeansSuite extends FunSuite with BeforeAndAfterAll {
-  val sc = new SparkContext("local", "test")
+  @transient private var sc: SparkContext = _
+
+  override def beforeAll() {
+    sc = new SparkContext("local", "test")
+  }
 
   override def afterAll() {
     sc.stop()

mllib/src/test/scala/spark/mllib/recommendation/ALSSuite.scala

@@ -66,7 +66,11 @@ object ALSSuite {
 
 
 class ALSSuite extends FunSuite with BeforeAndAfterAll {
-  val sc = new SparkContext("local", "test")
+  @transient private var sc: SparkContext = _
+
+  override def beforeAll() {
+    sc = new SparkContext("local", "test")
+  }
 
   override def afterAll() {
     sc.stop()

mllib/src/test/scala/spark/mllib/regression/LassoSuite.scala

@@ -57,7 +57,12 @@ object LassoSuite {
 }
 
 class LassoSuite extends FunSuite with BeforeAndAfterAll {
-  val sc = new SparkContext("local", "test")
+  @transient private var sc: SparkContext = _
+
+  override def beforeAll() {
+    sc = new SparkContext("local", "test")
+  }
+
 
   override def afterAll() {
     sc.stop()

mllib/src/test/scala/spark/mllib/regression/RidgeRegressionSuite.scala

@@ -27,7 +27,11 @@ import spark.SparkContext._
 
 
 class RidgeRegressionSuite extends FunSuite with BeforeAndAfterAll {
-  val sc = new SparkContext("local", "test")
+  @transient private var sc: SparkContext = _
+
+  override def beforeAll() {
+    sc = new SparkContext("local", "test")
+  }
 
   override def afterAll() {
     sc.stop()