[BEAM-5204] reduce restriction of JOIN

• Type: Improvement
• Status: Open
• Priority: P3
• Resolution: Unresolved
• Component/s: dsl-sql
• Assignee: Unassigned
• Reporter: Mingmin Xu
• Created: 23/Aug/18 06:04
• Updated: 03/Jun/22 22:04

Description

ATM streaming-streaming JOIN is acceptable only when triggersOncePerWindow(windowingStrategy). With PaneInfo exposed by UDF, we should allow JOIN with multiple triggers as developers can filter out what they want now.