[IMPALA-1829] Enable and test creating UDAs with an intermediate type different from the result type.

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Impala 2.1.1
• Fix Version/s: Impala 2.3.0
• Labels: ramp-up
• Target Version: Product Backlog
• Assignee: Tim Armstrong
• Reporter: Alexander Behm
• Created: 27/Feb/15 21:42
• Updated: 04/Jan/17 23:58
• Resolved: 19/Aug/15 06:52

Description

Internally, we can handle aggregate functions with different intermediate/result types. However, our CREATE FUNCTION DDL still prevents users form creating such functions in analysis. We should enable this functionality, uncomment the existing analyzer tests, and add end-to-end tests.

Start by looking at CreateUdaStmt.java analyze()