Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/11636#discussion_r56364323
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/codegen/CodeGenerator.scala
---
@@ -158,9 +158,13 @@ class CodegenContext {
/** The variable name of the input row in generated code. */
final var INPUT_ROW = "i"
+ /** The variable name of the input col in generated code. */
+ var INPUT_COLORDINAL = "idx"
+
/**
* The map from a variable name to it's next ID.
*/
+ private val freshNameJavaTypes = new mutable.HashMap[String, String]
--- End diff --
Move these into DataSourceScan
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