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Posted to dev@lucene.apache.org by "David Smiley (JIRA)" <ji...@apache.org> on 2014/01/30 18:02:09 UTC

[jira] [Created] (LUCENE-5424) FilteredQuery useRandomAccess() should use cost()

David Smiley created LUCENE-5424:
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             Summary: FilteredQuery useRandomAccess() should use cost()
                 Key: LUCENE-5424
                 URL: https://issues.apache.org/jira/browse/LUCENE-5424
             Project: Lucene - Core
          Issue Type: Improvement
          Components: core/query/scoring
            Reporter: David Smiley


Now that Lucene's DISI has a cost() method, it's possible for FilteredQuery's RANDOM_ACCESS_FILTER_STRATEGY to use a smarter algorithm in its useRandomAccess() method.  In particular, it might examine filterIter.cost() to see if it is greater than the cost returned by weight.scorer().cost() of the query.



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