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https://issues.apache.org/jira/browse/SOLR-3855?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13493115#comment-13493115
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Adrien Grand commented on SOLR-3855:
------------------------------------

bq. Having to know all of the field names to actually get all of the field 
values is not a good thing.

Good point. I should rework this part of the patch.

bq. I think we should model the docvalues as stored fields (that's how I always 
planned on doing it - but never got around to it). fl=* should still return 
these fields.

This was my first idea too, but at this time I forced doc values to be 
memory-resident. I think Robert's point to not fetch doc values automatically 
because they could potentially imply a crazy number of random disk seeks makes 
sense.

A trade-off could be to only fetch automatically memory-resident doc values but 
I think it would be very confusing for users.

bq. I wonder if we could pick a better name?

I used this name because it is the name in the Lucene API and because this 
feature has been "marketed" with this name in various blog posts and conference 
talks. Do you have an idea for another name?
                
> DocValues support
> -----------------
>
>                 Key: SOLR-3855
>                 URL: https://issues.apache.org/jira/browse/SOLR-3855
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Adrien Grand
>            Assignee: Adrien Grand
>            Priority: Minor
>             Fix For: 4.1, 5.0
>
>         Attachments: SOLR-3855.patch, SOLR-3855.patch
>
>
> It would be nice if Solr supported DocValues:
>  - for ID fields (fewer disk seeks when running distributed search),
>  - for sorting/faceting/function queries (faster warmup time than fieldcache),
>  - better on-disk and in-memory efficiency (you can use packed impls).

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