[jira] [Created] (LUCENE-7099) add newDistanceSort to sandbox LatLonPoint

["Robert Muir (JIRA)" <ji...@apache.org>]

Robert Muir created LUCENE-7099:
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             Summary: add newDistanceSort to sandbox LatLonPoint
                 Key: LUCENE-7099
                 URL: https://issues.apache.org/jira/browse/LUCENE-7099
             Project: Lucene - Core
          Issue Type: Bug
            Reporter: Robert Muir


This field does not support sorting by distance, which is a very common use case. 

We can add {{LatLonPoint.newDistanceSort(field, latitude, longitude)}} which returns a suitable SortField. There are a lot of optimizations esp when e.g. the priority queue gets full to avoid tons of haversin() computations.

Also, we can make use of the SortedNumeric data to switch newDistanceQuery/newPolygonQuery to the two-phase iterator api, so they aren't doing haversin() calls on bkd leaf nodes. It should look a lot like LUCENE-7019



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