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https://issues.apache.org/jira/browse/LUCENE-1911?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12756171#action_12756171
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Mark Miller commented on LUCENE-1911:
-------------------------------------
Could we commit now Uwe? Its easy to tweak if we have to. Its likely to work
and stick like this though - so if we commit, I can make the release artifcats
and run tests and all that jazz - then if we are good, it will be a very fast
turnaround. Otherwise I have to start all that much later in either case. I'd
prefer to be optimistic and get everything ready by tonight.
I'll leave it up to you though.
> 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
>
>
> 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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