[GitHub] [spark] pengzhon-db commented on a diff in pull request #41026: [SPARK-43132] [SS] [CONNECT] Add DataStreamWriter foreach() API

["pengzhon-db (via GitHub)" <gi...@apache.org>]

pengzhon-db commented on code in PR #41026:
URL: https://github.com/apache/spark/pull/41026#discussion_r1192856772


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sql/core/src/main/scala/org/apache/spark/sql/streaming/DataStreamWriter.scala:
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@@ -534,6 +552,8 @@ final class DataStreamWriter[T] private[sql](ds: Dataset[T]) {
 
   private var foreachWriter: ForeachWriter[T] = null
 
+  private var pythonForeachWriter: PythonForeachWriter = null
+

Review Comment:
   What if you just try to cast with `asInstanceOf[org.apache.spark.sql.ForeachWriter[org.apache.spark.sql.Row]]` ?



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