Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/7291#discussion_r34158183
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/InternalRow.scala ---
@@ -53,70 +53,8 @@ abstract class InternalRow extends Row {
// A default implementation to change the return type
override def copy(): InternalRow = this
- override def apply(i: Int): Any = get(i)
--- End diff --
The origin code is weird. We have defined `get(i: Int) = apply(i)`, and we
should implement `apply` in subclasses. However, we change this definition here
and subclasses of `InternalRow` have to implement `get`.
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