[SPARK-30801] Subqueries should not be AQE-ed if main query is not

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0
• Fix Version/s: 3.0.0
• Component/s: SQL
• Target Version/s: 3.0.0
• Assignee: Wei Xue
• Reporter: Wei Xue
• Created: 12/Feb/20 20:09
• Updated: 12/Apr/20 22:50
• Resolved: 14/Feb/20 03:26

Description

Currently there are unsupported queries by AQE, e.g., queries that contain DPP filters. But if the main query is unsupported while the sub-query is, the subquery itself will be AQE-ed, which can lead to performance regressions due to missed opportunity of sub-query reuse.

Issue Links

• links to: GitHub Pull Request #27554