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  1. Lucene - Core
  2. LUCENE-5424

FilteredQuery useRandomAccess() should use cost()

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Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • None
    • core/query/scoring
    • None
    • New

    Description

      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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          depends upon

          Bug - A problem which impairs or prevents the functions of the product. LUCENE-4607 Add estimateDocCount to DocIdSetIterator

          • Major - Major loss of function.
          • Closed
          is related to

          Improvement - An improvement or enhancement to an existing feature or task. LUCENE-4410 Make FilteredQuery more flexible with regards to how filters are applied

          • Major - Major loss of function.
          • Closed
          is superceded by

          Improvement - An improvement or enhancement to an existing feature or task. LUCENE-5979 Use the cost API instead of a heuristic on the first document in FilteredQuery to decide on whether to use random access

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed
          relates to

          Improvement - An improvement or enhancement to an existing feature or task. LUCENE-5460 Allow driving a query by sparse filters

          • Major - Major loss of function.
          • Resolved

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              Unassigned Unassigned
              dsmiley David Smiley
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              Dates

                Created:
                Updated:
                Resolved: