[HAWQ-1450] New HAWQ executor with vectorization & possible code generation

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: backlog, 2.4.0.0
• Component/s: Query Execution
• Assignee: Hongxu Ma
• Reporter: Lei Chang
• Created: 03/May/17 01:01
• Updated: 20/Jul/18 09:59
• Resolved: 20/Jul/18 09:59

Description

Most HAWQ executor code is inherited from postgres & gpdb. Let's discuss how to build a new hawq executor with vectorization and possibly code generation. These optimization may potentially improve the query performance a lot.

Sub-Tasks

• refactor the vtype in order to advance the performance: Open
• implement some vectorized aggregate functions: Open