[DRILL-6335] Refactor row set abstractions to prepare for unions

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.14.0
• Labels: ready-to-commit
• Assignee: Paul Rogers
• Reporter: Paul Rogers
• Reviewer: Padma Penumarthy
• Created: 17/Apr/18 02:09
• Updated: 29/Apr/18 20:38
• Resolved: 29/Apr/18 20:38

Description

The row set abstractions will eventually support unions and lists. The changes to support these types are extensive. This PR introduces refactoring that puts the pieces in the correct location to allow for inserting those additional types.

Issue Links

• links to: GitHub Pull Request #1218