Github user marmbrus commented on a diff in the pull request:
https://github.com/apache/spark/pull/5725#discussion_r29303434
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/GeneratedAggregate.scala
---
@@ -265,7 +283,49 @@ case class GeneratedAggregate(
val resultProjection = resultProjectionBuilder()
Iterator(resultProjection(buffer))
+ } else if (unsafeEnabled && schemaSupportsUnsafe) {
--- End diff --
Similar to my comment above, I think it would be better if this decision
was made in the query planner.
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