[LUCENE-6856] LRUQueryCache.CachingWrapperWeight should delegate the bulk scorer

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 5.4, 6.0
• Lucene Fields: New
• Assignee: Adrien Grand
• Reporter: Adrien Grand
• Created: 27/Oct/15 13:12
• Updated: 28/Aug/22 14:44
• Resolved: 27/Oct/15 15:00

Description

I think we have two issues with LRUQueryCache.CachingWrapperWeight:

• when generating cached entries, it creates a Scorer and loads it into a DocIdSet while it would be more efficient to use a BulkScorer to do so since we consume all matching documents
• when a query should not be cached (eg. because it has not be seen often enough yet), we do not delegate the bulk scorer, which means that we will use a DefaultBulkScorer on top of the scorer, which can be significantly slower for some queries (eg. disjunctions)