viirya commented on a change in pull request #25209: [SPARK-28456][SQL]Add a
public API `Encoder.copyEncoder` to allow creating Encoder without touching
Scala Reflection
URL: https://github.com/apache/spark/pull/25209#discussion_r305572944
##########
File path: sql/catalyst/src/main/scala/org/apache/spark/sql/Encoder.scala
##########
@@ -80,4 +80,10 @@ trait Encoder[T] extends Serializable {
* A ClassTag that can be used to construct an Array to contain a collection
of `T`.
*/
def clsTag: ClassTag[T]
+
+ /**
+ * Create a copied [[Encoder]]. The implementation may just copy internal
reusable fields to speed
+ * up the [[Encoder]] creation.
+ */
+ def copyEncoder: Encoder[T]
Review comment:
Seems good `makeCopy`.
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