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https://issues.apache.org/jira/browse/SOLR-3230?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13457967#comment-13457967
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David Smiley commented on SOLR-3230:
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FYI, FWIW the new SpatialTwoDoubles does a bbox range query approximation and
then does the distance calculation for a circle query shape after. I'm
referring to the Solr adapter to a corresponding Lucene 4 spatial "strategy"
class. Looking through the comments above, it seems another option I didn't
consider was doing the bbox range on the fieldcache (so-called "frange" style).
> Performance improvement for geofilt by doing a bbox approximation and then
> Filter
> ---------------------------------------------------------------------------------
>
> Key: SOLR-3230
> URL: https://issues.apache.org/jira/browse/SOLR-3230
> Project: Solr
> Issue Type: Improvement
> Reporter: Bill Bell
> Assignee: Yonik Seeley
> Fix For: 4.0
>
> Attachments: SOLR-3230-3.patch, SOLR-3230.patch
>
>
> This changes {!geofilt} to use a bounding box and then does a accurate filter.
> See attachment
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