Github user jinxing64 commented on a diff in the pull request:
https://github.com/apache/spark/pull/19652#discussion_r148775355
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/execution/ScriptTransformationExec.scala
---
@@ -267,6 +268,33 @@ private class ScriptTransformationWriterThread(
/** Contains the exception thrown while writing the parent iterator to
the external process. */
def exception: Option[Throwable] = Option(_exception)
+ private def buildJSONString(sb: StringBuilder, obj: Any): Unit = {
--- End diff --
TODO: build json string for more types
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