[SPARK-12605] Pushing Join Predicates Through Union All

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Incomplete
• Affects Version/s: 1.6.0
• Component/s: Optimizer, SQL
• Labels: bulk-closed
• Assignee: Unassigned
• Reporter: Xiao Li
• Created: 02/Jan/16 17:14
• Updated: 21/May/19 04:32
• Resolved: 21/May/19 04:32

Description

When selectivity of Join predicates is high, we can push join through union all.

Issue Links

• links to: [Github] Pull Request #10556 (gatorsmile)