Github user asfgit closed the pull request at:
https://github.com/apache/spark/pull/17911
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Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/17911#discussion_r115540635
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/expressions/UserDefinedFunction.scala
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@@ -47,12 +47,37 @@ case class UserDefinedFunction prot
Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/17911#discussion_r115540428
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/expressions/UserDefinedFunction.scala
---
@@ -47,12 +47,37 @@ case class UserDefinedFunction prot
GitHub user ueshin opened a pull request:
https://github.com/apache/spark/pull/17911
[SPARK-20668][SQL] Modify ScalaUDF to handle nullability.
## What changes were proposed in this pull request?
When registering Scala UDF, we can know if the udf will return nullable
value o
