[FLINK-19625] Introduce multi-input exec node

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Implemented
• Fix Version/s: 1.12.0
• Component/s: Table SQL / Planner
• Labels: pull-request-available
• Assignee: godfrey he
• Reporter: Caizhi Weng
• Created: 14/Oct/20 03:05
• Updated: 19/Oct/20 03:47
• Resolved: 19/Oct/20 03:47

Description

For multi-input to work in Blink planner, we should first introduce multi-input exec node in the planner.

Issue Links

• links to: GitHub Pull Request #13671