Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/10330#discussion_r48444083
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/basicOperators.scala ---
@@ -207,11 +220,15 @@ 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))
private def collectData(): Array[InternalRow] = {
val data = child.execute().map(_.copy()).takeOrdered(limit)(ord)
- projection.map(data.map(_)).getOrElse(data)
+ if (projection.isDefined) {
+ projection.map(p =>
data.map(p(_).copy().asInstanceOf[InternalRow])).get
--- End diff --
I re-checked GenerateUnsafeProjection, it will return the same unsafe row.
So I should use another copy() here.
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