[SPARK-22892] Simplify some estimation logic by using double instead of decimal

• Type: Sub-task
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.3.0
• Fix Version/s: 2.3.0
• Component/s: SQL
• Assignee: Zhenhua Wang
• Reporter: Zhenhua Wang
• Created: 23/Dec/17 08:19
• Updated: 29/Dec/17 07:41
• Resolved: 29/Dec/17 07:40

Issue Links

• links to: [Github] Pull Request #20062 (wzhfy)