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  1. Lucene - Core
  2. LUCENE-7994

Use int/int hash map for int taxonomy facet counts

Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 7.2, 8.0
    • None
    • None
    • New

    Description

      Int taxonomy facets today always count into a dense int[], which is wasteful in cases where the number of unique facet labels is high and the size of the current result set is small.

      I factored the native hash map from LUCENE-7927 and use a simple heuristic (customizable by the user by subclassing) to decide up front whether to count sparse or dense. I also made loading of the large children and siblings int[] lazy, so that they are only instantiated if you really need them.

      Attachments

        1. LUCENE-7994.patch
          30 kB
          Michael McCandless
        2. LUCENE-7994.patch
          38 kB
          Michael McCandless

        Activity

          People

            mikemccand Michael McCandless
            mikemccand Michael McCandless
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            Dates

              Created:
              Updated:
              Resolved: