Github user marmbrus commented on a diff in the pull request:
https://github.com/apache/spark/pull/10184#discussion_r46991908
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/Dataset.scala ---
@@ -67,15 +67,21 @@ class Dataset[T] private[sql](
tEncoder: Encoder[T]) extends Queryable with Serializable {
/**
- * An unresolved version of the internal encoder for the type of this
dataset. This one is marked
- * implicit so that we can use it when constructing new [[Dataset]]
objects that have the same
- * object type (that will be possibly resolved to a different schema).
+ * An unresolved version of the internal encoder for the type of this
[[Dataset]]. This one is
+ * marked implicit so that we can use it when constructing new
[[Dataset]] objects that have the
+ * same object type (that will be possibly resolved to a different
schema).
*/
private[sql] implicit val unresolvedTEncoder: ExpressionEncoder[T] =
encoderFor(tEncoder)
/** The encoder for this [[Dataset]] that has been resolved to its
output schema. */
private[sql] val resolvedTEncoder: ExpressionEncoder[T] =
- unresolvedTEncoder.resolve(queryExecution.analyzed.output,
OuterScopes.outerScopes)
+ unresolvedTEncoder.resolve(logicalPlan.output, OuterScopes.outerScopes)
+
+ /**
+ * The encoder where the expressions used to construct an object from an
input row have been
+ * bound to the ordinals of the given schema.
--- End diff --
Nit: I'm going to change this to say `this [[Dataset]]'s output schema`
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