Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/19977#discussion_r158337643
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/stringExpressions.scala
---
@@ -73,17 +93,27 @@ case class Concat(children: Seq[Expression]) extends
Expression with ImplicitCas
}
"""
}
+
+ val (javaClass, initCode) = if (isBinaryMode) {
--- End diff --
`concatType`?
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