amandeep-sharma commented on a change in pull request #31769:
URL: https://github.com/apache/spark/pull/31769#discussion_r589416168
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/DataFrameNaFunctions.scala
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@@ -359,6 +359,16 @@ final class DataFrameNaFunctions private[sql](df:
DataFrame) {
return df
}
+ val replaceableAttrs = AttributeSet(cols.map { colName =>
+ // Check column name exists
+ val attr = df.resolve(colName) match {
+ case a: Attribute => a
+ case _ => throw new UnsupportedOperationException(
+ s"Nested field ${colName} is not supported.")
Review comment:
Added.
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