[KYLIN-867] Hybrid model for multiple realizations/cubes

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: v1.0
• Component/s: Metadata, Query Engine
• Sprint: Sprint 44, Sprint 45, Sprint 46, Sprint 47, Sprint 48
• Assignee: Shao Feng Shi
• Reporter: Shao Feng Shi
• Created: 01/Jul/15 05:52
• Updated: 14/Sep/15 06:54
• Resolved: 06/Sep/15 11:50

Description

Scenario: users have a cube already built with the history data; Now they create a new cube which adding more dimensions; Due to some reason, user expects both the history cube and current cube can be scanned to get a full result set;

A hybrid realization will be introduced, which is composed by multiple cubes, and these cubes have no overlap/gap on the partition date; Then the hybrid will delegate the query to all cubes, and then merge the results;