[SPARK-3864] Specialize join for tables with unique integer keys

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Later
• Component/s: SQL
• Assignee: Unassigned
• Reporter: Reynold Xin
• Created: 09/Oct/14 00:02
• Updated: 17/Dec/15 06:53
• Resolved: 17/Dec/15 06:53

Description

We can create a new operator that uses an array as the underlying storage to avoid hash lookups entirely for dimension tables that have integer keys.