[SPARK-26639] The reuse subquery function maybe does not work in SPARK SQL

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.1.0
• Component/s: SQL
• Assignee: Unassigned
• Reporter: Ke Jia
• Created: 17/Jan/19 01:45
• Updated: 12/Dec/22 18:10

Description

The subquery reuse feature has done in https://github.com/apache/spark/pull/14548

In my test, I found the visualized plan do show the subquery is executed once. But the stage of same subquery execute maybe not once.

 

Issue Links

• is part of: SPARK-16958 Reuse subqueries within single query