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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