Depend on Commons Math explicitly instead of accidentally getting it from...

Depend on Commons Math explicitly instead of accidentally getting it from Hadoop (which stops working in 2.2.x) and also use the newer commons-math3

graphx/pom.xml

@@ -37,6 +37,11 @@
       <artifactId>spark-core_${scala.binary.version}</artifactId>
       <version>${project.version}</version>
     </dependency>
+    <dependency>
+      <groupId>org.apache.commons</groupId>
+      <artifactId>commons-math3</artifactId>
+      <version>3.2</version>
+    </dependency>
     <dependency>
       <groupId>org.eclipse.jetty</groupId>
       <artifactId>jetty-server</artifactId>

graphx/src/main/scala/org/apache/spark/graphx/lib/SVDPlusPlus.scala

@@ -18,7 +18,7 @@
 package org.apache.spark.graphx.lib
 
 import scala.util.Random
-import org.apache.commons.math.linear._
+import org.apache.commons.math3.linear._
 import org.apache.spark.rdd._
 import org.apache.spark.graphx._