Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/10330#discussion_r47999077
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/basicOperators.scala ---
@@ -207,7 +211,7 @@ case class TakeOrderedAndProject(
private val ord: InterpretedOrdering = new
InterpretedOrdering(sortOrder, child.output)
// TODO: remove @transient after figure out how to clean closure at
InsertIntoHiveTable.
- @transient private val projection = projectList.map(new
InterpretedProjection(_, child.output))
+ @transient private val projection =
projectList.map(UnsafeProjection.create(_, child.output))
--- End diff --
Sorry, I still have a dumb question. When calling the `eval` of each of the
specified expressions, how can we know they can process unsafe rows? Why the
planner insert unsafe->safe conversion in the original design?
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