Github user aloknsingh commented on a diff in the pull request:
https://github.com/apache/spark/pull/7146#discussion_r33737512
--- Diff: mllib/src/main/scala/org/apache/spark/mllib/linalg/Matrices.scala
---
@@ -193,7 +193,8 @@ private[spark] class MatrixUDT extends
UserDefinedType[Matrix] {
}
}
- override def hashCode(): Int = 1994
+ // see [SPARK-8647], this achieves the needed constant hash code without
constant no.
+ override def hashCode(): Int = this.getClass.getName.hashCode()
--- End diff --
@mengxr agree I will change as per comment
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