[HIVE-21547] Temp Tables: Use stORC format for temporary tables

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.0.0
• Fix Version/s: 4.0.0-alpha-1
• Component/s: ORC
• Assignee: Krisztian Kasa
• Reporter: Gopal Vijayaraghavan
• Created: 30/Mar/19 01:04
• Updated: 17/Nov/22 08:50
• Resolved: 09/Jul/19 15:47

Description

Using st(reaming)ORC (hive.exec.orc.delta.streaming.optimizations.enabled=true) format has massive performance advantages when creating data-sets which will not be stored for long-term.

The format is compatible with ORC for vectorization and other features, while being cheaper to write out to filesystem.