[IMPALA-6506] Codegen in ORC scanner

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: Impala 4.0.0, Impala 3.4.0
• Component/s: Backend
• Epic Link: ORC Performance
• Epic Color: ghx-label-4
• Assignee: Gabor Kaszab
• Reporter: Quanlong Huang
• Created: 12/Feb/18 21:37
• Updated: 19/Jun/20 09:40
• Resolved: 19/Jun/20 09:40

Description

Currently, the orc-scanner materializes tuples from the orc-reader (ORC lib). We need a Codegen implementation in TransferScratchTuples for the runtime filter + conjunct evaluation loop.