[LUCENE-9958] Performance regression when a minimum number of matching SHOULD clauses is required

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 8.9
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Adrien Grand
• Created: 14/May/21 09:49
• Updated: 28/Aug/22 16:21
• Resolved: 14/May/21 12:04

Description

Opening this issue on behalf of mattweber, who reported this at https://discuss.elastic.co/t/es-7-7-1-es-7-12-0-wand-performance-issue/272854.

It looks like the fact that we introduced dynamic pruning for queries that already have a minimum number of SHOULD clauses configured makes things slower, at least in some cases.