[LUCENE-1911] When using QueryWrapperFilter with CachingWrapperFilter, QueryWrapperFilter returns a DocIdSet that creates a Scorer, which gets cached rather than a bit set

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.9
• Lucene Fields: New
• Assignee: Uwe Schindler
• Reporter: Mark Miller
• Created: 16/Sep/09 17:41
• Updated: 22/Nov/24 09:49
• Resolved: 17/Sep/09 12:03

Description

there is a large performance cost to this.

The old impl for this type of thing, QueryFilter, recommends :

@deprecated use a CachingWrapperFilter with QueryWrapperFilter

The deprecated QueryFilter itself also suffers from the problem because its now implemented using a CachingWrapperFilter and QueryWrapperFilter.

see http://search.lucidimagination.com/search/document/7f54715f14b8b7a/lucene_2_9_0rc4_slower_than_2_4_1