Github user shivaram commented on a diff in the pull request:
https://github.com/apache/spark/pull/16154#discussion_r91136911
--- Diff: core/src/main/scala/org/apache/spark/api/r/RRunner.scala ---
@@ -152,7 +152,7 @@ private[spark] class RRunner[U](
dataOut.writeInt(mode)
if (isDataFrame) {
- SerDe.writeObject(dataOut, colNames)
+ SerDe.writeObject(dataOut, colNames, jvmObjectTracker = null)
--- End diff --
I think this change is fine as we are only writing out an array of string
-- the other thing we can do is replace the code here and not call SerDe -- but
instead just write out the code for writing an array of strings.
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