Github user dbtsai commented on a diff in the pull request:
https://github.com/apache/spark/pull/12504#discussion_r60313819
--- Diff: mllib/src/main/scala/org/apache/spark/mllib/linalg/Matrices.scala
---
@@ -158,6 +159,13 @@ sealed trait Matrix extends Serializable {
*/
@Since("1.5.0")
def numActives: Int
+
+ /**
+ * Convert this matrix to the new mllib-local representation.
+ * This does NOT copy the data; it copies references.
+ */
+ private[spark]
+ def toNew: newlinalg.Matrix
--- End diff --
Yes. Since this looks more like casting not converting, so `as` maybe more
meaningful for users.
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