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  1. Lucene - Core
  2. LUCENE-7654

To-parent block joins should implement two-phase iteration

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Details

    • Improvement
    • Status: Resolved
    • Minor
    • Resolution: Fixed
    • None
    • 6.5, 7.0
    • None
    • None
    • New

    Description

      To-parent block joins are a good fit for two-phase iteration. Currently the iterator implementation visits all child matches before returning a parent match. Instead, an approximation would only need to find one child match in order to return a potential parent match. This would make to-parent block joins more efficient when used in conjunctions.

      Attachments

        1. LUCENE-7654.patch
          28 kB
          Adrien Grand

        Issue Links

          breaks

          Bug - A problem which impairs or prevents the functions of the product. LUCENE-7833 Calculating minimum score instead of maximum score in ToParentBlockJoinQuery.BlockJoinScorer.setScoreAndFreq

          • Major - Major loss of function.
          • Closed
          relates to

          Task - A task that needs to be done. LUCENE-6959 Remove ToParentBlockJoinCollector

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

          Activity

            People

              Unassigned Unassigned
              jpountz Adrien Grand
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              Dates

                Created:
                Updated:
                Resolved: