Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/22976#discussion_r233771918
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/codegen/GenerateOrdering.scala
---
@@ -68,62 +68,55 @@ object GenerateOrdering extends
CodeGenerator[Seq[SortOrder], Ordering[InternalR
genComparisons(ctx, ordering)
}
+ /**
+ * Creates the variables for ordering based on the given order.
+ */
+ private def createOrderKeys(
+ ctx: CodegenContext,
+ row: String,
+ ordering: Seq[SortOrder]): Seq[ExprCode] = {
+ ctx.INPUT_ROW = row
+ // to use INPUT_ROW we must make sure currentVars is null
+ ctx.currentVars = null
--- End diff --
Very agreed. :)
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