[IMPALA-4165] Enable codegen for all UDAs in aggregations

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: Impala 2.8.0
• Component/s: Backend
• Labels: codegen perf usability
• Target Version: Impala 2.8.0
• Assignee: Tim Armstrong
• Reporter: Tim Armstrong
• Created: 19/Sep/16 21:35
• Updated: 19/Sep/16 22:06
• Resolved: 19/Sep/16 22:06

Description

There are a significant number of cases where codegen is disabled in the aggregation node: UDAs, timestamps, some string functions.

The root cause for these was that codegen support for aggregate functions using the UDA interface was only half-completed. Most of the infrastructure is there, it just needs to be used and tested.

Issue Links

• duplicates: IMPALA-1430 Codegen all aggregate functions, including UDAs