Github user liancheng commented on a diff in the pull request:
https://github.com/apache/spark/pull/5383#discussion_r28205769
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/Generate.scala ---
@@ -75,9 +78,15 @@ case class Generate(
outputRows.map(or => joinProjection(joinedRow(row, or)))
}
}
+ }.mapPartitions { iter =>
+ val nullOriginalRow =
Row(Seq.fill(generator.output.size)(Literal(null)): _*)
+ val joinedRow = new JoinedRow
+ iter ++ boundGenerator.terminate().map(joinedRow(nullOriginalRow,
_))
}
} else {
- child.execute().mapPartitions(iter => iter.flatMap(row =>
boundGenerator.eval(row)))
- }
+ child.execute().mapPartitions(iter =>
+ iter.flatMap(row => boundGenerator.eval(row))
+ )
+ }.mapPartitions(_ ++ boundGenerator.terminate())
--- End diff --
This should only be added when `join` is false. Move it to the above line.
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