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https://issues.apache.org/jira/browse/SOLR-8396?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15578981#comment-15578981
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Tomás Fernández Löbbe commented on SOLR-8396:
---------------------------------------------

After talking with Adrian, and later with some more people at the Lucene 
Revolution, the plan is that PointFields will use {{SortedNumericDocValues}} 
instead of {{SortedSetDocValues}} for multi-valued cases. Doing that involves 
much more work, since we need to change all the consumers. This patch is 
already getting large, so I think it may be better to tackle that in a followup 
Jira. 
In the recent branch commits:
* I removed the use of {{SortedSetDocValues}} from the PointFields and I throw 
an exception if the user tries to create a PointField with MultiValued DV (I'm 
now ignoring the tests which required MV fields with DV). 
* I fixed the issue with returning DV as stored fields that I was hitting. 
* Added LongPointField.

[~steve_rowe] had some concerns about naming, since Solr already has a 
{{PointType}} and in the schemas I'm using "pTYPE", which could be confused 
with the old "Plain numeric fields" (Solr 1.4-ish?). I'm open to suggestions. 

> Add support for PointFields in Solr
> -----------------------------------
>
>                 Key: SOLR-8396
>                 URL: https://issues.apache.org/jira/browse/SOLR-8396
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Ishan Chattopadhyaya
>         Attachments: SOLR-8396.patch, SOLR-8396.patch, SOLR-8396.patch, 
> SOLR-8396.patch, SOLR-8396.patch, SOLR-8396.patch, SOLR-8396.patch, 
> SOLR-8396.patch
>
>
> In LUCENE-6917, [~mikemccand] mentioned that DimensionalValues are better 
> than NumericFields in most respects. We should explore the benefits of using 
> it in Solr and hence, if appropriate, switch over to using them.



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