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  1. Lucene - Core
  2. LUCENE-4594

Spatial PrefixTreeStrategy shouldn't index center-points with shapes together

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 4.0, 6.0
    • Fix Version/s: 4.1, 6.0
    • Component/s: modules/spatial
    • Labels:
      None
    • Lucene Fields:
      New

      Description

      The Spatial PrefixTreeStrategy will index the center-point of a non-point shape it is given to index, in addition to the shape itself of course. The rationale was that this point could be picked up by PointPrefixTreeFieldCacheProvider for distance/sorting. However this approach is buggy since the distinction of grid cells between the center point and the shape itself is lost when the shape gets indexed down to max-levels precision – each grid cell therein appears to be another point that needs to be brought into memory. It's also possible that the shape is a LineString or some other non-trivial shape in which its center point isn't actually in the shape.

      Even if you knew this problem would never happen, I think you're better off indexing center points into another spatial field if you want them. Perhaps arguably this strategy could do that internally? Wether or not that ends up happening, I just want to remove the problematic behavior now.

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            • Assignee:
              dsmiley David Smiley
              Reporter:
              dsmiley David Smiley
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              • Created:
                Updated:
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