[KYLIN-4818] Calculate cuboid statistics in Kylin 4

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: v4.0.0-beta
• Component/s: Spark Engine
• Skill Level: Committers Level (Medium to Hard)
• Assignee: Xiaoxiang Yu
• Reporter: Xiaoxiang Yu
• Created: 13/Nov/20 07:38
• Updated: 08/Jan/21 02:18
• Resolved: 04/Jan/21 07:44

Description

Refer to SparkFactDistinct.java in Kylin 3, I will try to use spark to calculate(estimate) rowcount/size for cuboid candidate. Rowcount/size of cuboid si the input for cubeplanner phase one and phase two.