iverase commented on issue #874: LUCENE-8976: Use exact distance between point and bounding rectangle in FloatPointNearestNeighbor URL: https://github.com/apache/lucene-solr/pull/874#issuecomment-530329820 In my test this approach looks faster than the previous approach, in particular for low number of dimensions. Still what it seems memory inefficient is the cloning of the index tree every time we recurse down one inner node.
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