Github user hvanhovell commented on a diff in the pull request: https://github.com/apache/spark/pull/18483#discussion_r125025743 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/InternalRow.scala --- @@ -94,4 +108,21 @@ object InternalRow { /** Returns an empty [[InternalRow]]. */ val empty = apply() + + /** + * Copies the given value if it's string/struct/array/map type. + */ + def copyValue(value: Any): Any = { + if (value.isInstanceOf[UTF8String]) { --- End diff -- ??? - pattern matching should yield the same performance as `if (value.instanceof[...]) ... else if (value.instanceof[...]) ...`
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