Github user marmbrus commented on a diff in the pull request:
https://github.com/apache/spark/pull/6876#discussion_r32786889
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/InternalRow.scala ---
@@ -27,6 +27,63 @@ import
org.apache.spark.sql.catalyst.expressions.GenericRow
abstract class InternalRow extends Row {
// A default implementation to change the return type
override def copy(): InternalRow = {this}
+
+ // A default version (slow), used for tests
--- End diff --
Is this really only used for tests? Won't it be used when we use an
internal row as a HashKey?
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