[SPARK-20668] Modify ScalaUDF to handle nullability.

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.3.0
• Fix Version/s: 2.3.0
• Component/s: SQL
• Assignee: Takuya Ueshin
• Reporter: Takuya Ueshin
• Created: 09/May/17 05:45
• Updated: 10/May/17 06:49
• Resolved: 10/May/17 06:49

Description

When registering Scala UDF, we can know if the udf will return nullable value or not. ScalaUDF and related classes should handle the nullability.

Issue Links

• links to: [Github] Pull Request #17911 (ueshin)