Github user liancheng commented on a diff in the pull request:
https://github.com/apache/spark/pull/5383#discussion_r28205652
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/generators.scala
---
@@ -71,6 +71,12 @@ abstract class Generator extends Expression {
copy._output = _output
copy
}
+
+ /**
+ * Call to notify that there are no more rows to process, clean up the
code or additional
+ * rows can be made here.
--- End diff --
Please reword this comment:
> Notifies that there are no more rows to process, clean up code and
optional additional rows can be made here.
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