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https://issues.apache.org/jira/browse/SOLR-2345?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13038242#comment-13038242
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David Smiley commented on SOLR-2345:
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I wouldn't expect to see any progress here any time soon. The underlying
problem is that the FieldCache architecture is single-valued. Lucene needs a
solution to rectify that. From what I hear, grand plans to rectify this
FieldCache limitation in the past have failed (I don't know why). But even if
this hurdle was resolved, it'd only be half the battle. geodist() & geofilt()
code is built around the notion of multiple fields supplying the lat & lon
(VectorValueSource or something like that), not around it coming from a single
field. This limitation is at the core of these functions.
By comparison, I've found working on the "Lucene-Spatial-Playground" (temporary
name) a breath of fresh air. Multi-valued fields is not in the FieldCache; we
have a spatial substitute for that. And we don't use geodist() & geofilt() at
all.
> Extend geodist() and geofilt to support MultiValued lat long field
> ------------------------------------------------------------------
>
> Key: SOLR-2345
> URL: https://issues.apache.org/jira/browse/SOLR-2345
> Project: Solr
> Issue Type: New Feature
> Reporter: Bill Bell
>
> Extend geodist() and {!geofilt} to support a multiValued lat,long field
> without using geohash.
> sort=geodist() asc
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