[FLINK-14134] Introduce LimitableTableSource to optimize limit

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.10.0
• Component/s: Table SQL / API, Table SQL / Planner
• Labels: pull-request-available
• Assignee: Jingsong Lee
• Reporter: Jingsong Lee
• Created: 20/Sep/19 02:01
• Updated: 29/Oct/19 07:12
• Resolved: 29/Oct/19 07:12

Description

SQL: select *from t1 limit 1

Now source will scan full table, if we can introduce LimitableTableSource, let source know the limit line, source can just read one row is OK.

Issue Links

• links to: GitHub Pull Request #9876