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  1. Lucene - Core
  2. LUCENE-8060

Enable top-docs collection optimizations by default

Details

    • Improvement
    • Status: Closed
    • Minor
    • Resolution: Fixed
    • None
    • 8.0
    • None
    • None
    • New

    Description

      We are getting optimizations when hit counts are not required (sorted indexes, MAXSCORE, short-circuiting of phrase queries) but our users won't benefit from them unless we disable exact hit counts by default or we require them to tell us whether hit counts are required.

      I think making hit counts approximate by default is going to be a bit trappy, so I'm rather leaning towards requiring users to tell us explicitly whether they need total hit counts. I can think of two ways to do that: either by passing a boolean to the IndexSearcher constructor or by adding a boolean to all methods that produce TopDocs instances. I like the latter better but I'm open to discussion or other ideas?

      Attachments

        1. LUCENE-8060.patch
          12 kB
          Adrien Grand

        Activity

          People

            Unassigned Unassigned
            jpountz Adrien Grand
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            Dates

              Created:
              Updated:
              Resolved: