Github user nongli commented on a diff in the pull request:
https://github.com/apache/spark/pull/11274#discussion_r55080224
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/WholeStageCodegen.scala
---
@@ -116,6 +119,39 @@ trait CodegenSupport extends SparkPlan {
}
/**
+ * Returns source code to evaluate all the variables, and clear the
code of them, to prevent
--- End diff --
I was imagining something like:
evaluateAttributes(Seq[Expression]) which evaluates all the attribute
refernces in the tree that haven't been. This is kind of similar to what you
have below.
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