Github user maropu commented on a diff in the pull request:
https://github.com/apache/spark/pull/7324#discussion_r34524246
--- Diff: sql/hive/src/main/scala/org/apache/spark/sql/hive/hiveUDFs.scala
---
@@ -501,7 +501,15 @@ private[hive] case class HiveGenericUDTF(
protected lazy val inputInspectors = children.map(toInspector)
@transient
- protected lazy val outputInspector =
function.initialize(inputInspectors.toArray)
+ protected lazy val outputInspector = {
+ /**
+ * Field names are not used in HiveGenericUDTF#initialize(),
+ * so they are filled with empty strings.
+ */
+
function.initialize(ObjectInspectorFactory.getStandardStructObjectInspector(
+ (0 until inputInspectors.size).map(_ => ""),
--- End diff --
Ok, I'll make this issue pended for future work, and leave comments here
for our discussion.
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