[SPARK-20231] Refactor star schema code for the subsequent star join detection in CBO

• Type: Sub-task
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.2.0
• Fix Version/s: 2.2.0
• Component/s: SQL
• Assignee: Ioana Delaney
• Reporter: Ioana Delaney
• Created: 05/Apr/17 19:18
• Updated: 06/Apr/17 01:04
• Resolved: 06/Apr/17 01:04

Description

Decouples star schema code from the default join planning.

Issue Links

• links to: [Github] Pull Request #17544 (ioana-delaney)