[jira] [Commented] (SOLR-7044) optimize conjunctions and slow uncached filters

["Yonik Seeley (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-7044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14293769#comment-14293769 ] 

Yonik Seeley commented on SOLR-7044:
------------------------------------

I'm thinking an internal interface along the lines of:

{code}
  interface ApproximationIterator {
     public DocIdSetIterator getApproximation() throws IOException;
     public boolean matches() throws IOException;
  }
{code}

This won't be *public*, but just internal implementation for Solr to accelerate certain queries/filters.  When lucene comes up with an acceptable alternative to LUCENE-6198, we can look at switching to that.

> 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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