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https://issues.apache.org/jira/browse/SOLR-7044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14300356#comment-14300356
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Mikhail Khludnev commented on SOLR-7044:
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I think that demand for "conjunctions" is overestimated for me. Most time I 
bother about sort of disjunctions like pre 4.3 minShouldMatch, and/or frange. 
Hence, Solr's postFilters covers it really well already, there are only a one 
gap, and lack of Lucene support.    

> optimize conjunctions and slow uncached filters
> -----------------------------------------------
>
>                 Key: SOLR-7044
>                 URL: https://issues.apache.org/jira/browse/SOLR-7044
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Yonik Seeley
>             Fix For: 5.1
>
>
> Using the ideas from LUCENE-6198 (which has been closed), we can speed up 
> certain slow filters or boolean query conjunctions by supporting two phase 
> intersections.



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