Github user hvanhovell commented on a diff in the pull request:
https://github.com/apache/spark/pull/10374#discussion_r48015896
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/rows.scala
---
@@ -201,7 +201,7 @@ class GenericRow(protected[sql] val values: Array[Any])
extends Row {
override def toSeq: Seq[Any] = values.toSeq
- override def copy(): Row = this
+ override def copy(): Row = new GenericRow(values.clone())
--- End diff --
```GenericRow``` is supposed to be immutable. So there we really shouldn't
need to copy its values. Could you explain why this is needed?
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