[HIVE-12667] Proper fix for HIVE-12473

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Target Version/s: 2.0.0
• Assignee: Gunther Hagleitner
• Reporter: Gunther Hagleitner
• Created: 14/Dec/15 21:00
• Updated: 16/Feb/16 23:51
• Resolved: 22/Dec/15 20:07

Description

HIVE-12473 has added an incorrect comment and also lacks a test case.

Benefits of this fix:

• Does not say: "Probably doesn't work"
• Does not use grammar like "subquery columns and such"
• Adds test cases, that let you verify the fix
• Doesn't rely on certain structure of key expr, just takes the type at compile time
• Doesn't require an additional walk of each key expression
• Shows the type used in explain

Issue Links

• relates to: HIVE-12473 DPP: UDFs on the partition column side does not evaluate correctly