[SPARK-8563] [MLlib] Fixed a build error.

Author: lee19

mllib/src/main/scala/org/apache/spark/mllib/linalg/distributed/IndexedRowMatrix.scala

@@ -146,7 +146,7 @@ class IndexedRowMatrix(
       val indexedRows = indices.zip(svd.U.rows).map { case (i, v) =>
         IndexedRow(i, v)
       }
-      new IndexedRowMatrix(indexedRows, svd.U.numRows(), svd.U.numCols())
+      new IndexedRowMatrix(indexedRows, svd.U.numRows(), svd.U.numCols().toInt)
     } else {
       null
     }

mllib/src/test/scala/org/apache/spark/mllib/linalg/distributed/IndexedRowMatrixSuite.scala

@@ -142,8 +142,8 @@ class IndexedRowMatrixSuite extends SparkFunSuite with MLlibTestSparkContext {
     assert(svd.U.numRows() === m)
     assert(svd.U.numCols() === k)
     assert(svd.s.size === k)
-    assert(svd.V.numRows() === n)
-    assert(svd.V.numCols() === k)
+    assert(svd.V.numRows === n)
+    assert(svd.V.numCols === k)
   }
 
   test("validate k in svd") {