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https://issues.apache.org/jira/browse/LUCENE-7240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15255410#comment-15255410
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Michael McCandless commented on LUCENE-7240:
--------------------------------------------
+1
> Remove DocValues from LatLonPoint, add DocValuesField for that
> --------------------------------------------------------------
>
> Key: LUCENE-7240
> URL: https://issues.apache.org/jira/browse/LUCENE-7240
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Robert Muir
> Attachments: LUCENE-7240.patch, LUCENE-7240.patch
>
>
> LatLonPoint needed two-phase intersection initially because of big
> inefficiencies, but as of LUCENE-7239 all of its query operations:
> {{newBoxQuery()}}, {{newDistanceQuery()}}, {{newPolygonQuery()}} and
> {{nearest()}} only need the points datastructure (BKD).
> If you want to do {{newDistanceSort()}} then you need docvalues for that, but
> I think it should be moved to a separate field: e.g. docvalues is optional
> just like any other field in lucene. We can add other methods that make sense
> to that new docvalues field (e.g. facet by distance/region, expressions
> support, whatever). It is really disjoint from the core query support: and
> also currently has a heavyish cost of ~64-bits per value in space.
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