Hashcode and organize imports

Author: MechCoder

mllib/src/main/scala/org/apache/spark/mllib/linalg/Matrices.scala

@@ -21,13 +21,13 @@ import java.util.{Arrays, Random}
 
 import scala.collection.mutable.{ArrayBuilder => MArrayBuilder, HashSet => MHashSet, ArrayBuffer}
 
+import breeze.linalg.{CSCMatrix => BSM, DenseMatrix => BDM, Matrix => BM}
+
 import org.apache.spark.annotation.DeveloperApi
 import org.apache.spark.sql.Row
 import org.apache.spark.sql.types._
 import org.apache.spark.sql.catalyst.expressions.GenericMutableRow
 
-import breeze.linalg.{CSCMatrix => BSM, DenseMatrix => BDM, Matrix => BM}
-
 /**
  * Trait for a local matrix.
  */
@@ -185,6 +185,8 @@ private[spark] class MatrixUDT extends UserDefinedType[Matrix] {
     }
   }
 
+  override def hashCode(): Int = 1994
+
   private[spark] override def asNullable: MatrixUDT = this
 }