[SPARK-22917] Should not try to generate histogram for empty/null columns

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.3.0
• Fix Version/s: 2.3.0
• Component/s: SQL
• Assignee: Zhenhua Wang
• Reporter: Zhenhua Wang
• Created: 28/Dec/17 08:38
• Updated: 28/Dec/17 13:50
• Resolved: 28/Dec/17 13:50

Issue Links

• links to: [Github] Pull Request #20102 (wzhfy)