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https://issues.apache.org/jira/browse/LUCENE-1911?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Uwe Schindler updated LUCENE-1911:
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Attachment: LUCENE-1911.patch
- Added CHANGES.txt entry.
- Added a test to FieldCacheRangeFilter, that the iterators work correct and
isCacheable() is false, when the index contains deleted docs and the range
contains 0 (in which case TermDocs must be visited to test if a doc is deleted
or has value 0 in cache).
I will go to bed now and commit tomorrow!
> When using QueryWrapperFilter with CachingWrapperFilter, QueryWrapperFilter
> returns a DocIdSet that creates a Scorer, which gets cached rather than a bit
> set
> -------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: LUCENE-1911
> URL: https://issues.apache.org/jira/browse/LUCENE-1911
> Project: Lucene - Java
> Issue Type: Bug
> Reporter: Mark Miller
> Assignee: Uwe Schindler
> Fix For: 2.9
>
> Attachments: LUCENE-1911.patch, LUCENE-1911.patch, LUCENE-1911.patch,
> LUCENE-1911.patch
>
>
> 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
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