Github user sun-rui commented on a diff in the pull request:
https://github.com/apache/spark/pull/10480#discussion_r50216049
--- Diff: core/src/main/scala/org/apache/spark/api/r/SerDe.scala ---
@@ -355,6 +355,13 @@ private[spark] object SerDe {
writeInt(dos, v.length)
v.foreach(elem => writeObject(dos, elem))
+ // Handle Properties
--- End diff --
It is possible to construct a map for the properties and pass it to a
helper function on JVM side. That helper function can convert the map into
java.util.Properties. The problem is that if there are multiple Scala API
functions taking java.util.Properties as parameters, we have to create as many
helper functions as them. So I think we can keep current implementation as is
for now.
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