Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/5303#discussion_r27538725
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/literals.scala
---
@@ -62,7 +62,11 @@ object IntegerLiteral {
}
}
-case class Literal(value: Any, dataType: DataType) extends LeafExpression {
+case class Literal(var value: Any, dataType: DataType) extends
LeafExpression {
--- End diff --
we should create a object Literal and add an apply function that converts
string into UTF8String, rather than making this a var.
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