[FLINK-6334] Refactoring UDTF interface

• Type: Improvement
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 1.3.0
• Component/s: Table SQL / API
• Assignee: Ruidong Li
• Reporter: Ruidong Li
• Created: 20/Apr/17 01:55
• Updated: 03/May/17 20:06
• Resolved: 03/May/17 20:06

Description

The current UDTF leverages the table.join(expression) interface, which is not a proper interface in terms of semantics. We would like to refactor this to let UDTF use table.join(table) interface. Very briefly, UDTF's apply method will return a Table Type, so Join(UDTF('a, 'b, ...) as 'c) shall be viewed as join(Table)

Issue Links

• links to: GitHub Pull Request #3791