cloud-fan commented on code in PR #37407:
URL: https://github.com/apache/spark/pull/37407#discussion_r980960360
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sql/core/src/main/scala/org/apache/spark/sql/Dataset.scala:
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@@ -2118,6 +2127,16 @@ class Dataset[T] private[sql](
valueColumnName: String): DataFrame =
unpivot(ids.toArray, values.toArray, variableColumnName, valueColumnName)
+ /**
+ * Called from Python as Seq[Column] are easier to create via py4j than
Array[Column].
+ * We use Array[Column] for unpivot rather than Seq[Column] as those are
Java-friendly.
+ */
+ private[sql] def unpivotWithSeq(
Review Comment:
This method is not used.
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