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https://issues.apache.org/jira/browse/SOLR-2242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13644287#comment-13644287
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Bill Bell commented on SOLR-2242:
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Yeah. This issue has stalled. To get it ready for release we just need to apply
the patch and run all unit tests.
Issues tend to stall when we don't have a commiter leading the work to get
done. If someone will step up I will commit to do the work. the last time I
made a push for this there was several approaches:
1. Change the facet formats (Yonik)
2. Change the parameter names and hide the fact that we are looping through all
(limit=-1).
3. Try to get the sharding working. Although I would contend that we can
release without sharding and add it later. Sharding - we can send the unique
terms and combine to get exact numbers, or we can separate and send (as it is
now). The former is much harder to do and could cause perf issues.
Thoughts? Maybe at the Lucene conference this can be discussed?
> Get distinct count of names for a facet field
> ---------------------------------------------
>
> Key: SOLR-2242
> URL: https://issues.apache.org/jira/browse/SOLR-2242
> Project: Solr
> Issue Type: New Feature
> Components: Response Writers
> Affects Versions: 4.0-ALPHA
> Reporter: Bill Bell
> Priority: Minor
> Fix For: 4.3
>
> Attachments: SOLR-2242-3x_5_tests.patch, SOLR-2242-3x.patch,
> SOLR-2242.patch, SOLR-2242.patch, SOLR-2242.patch,
> SOLR-2242.shard.withtests.patch, SOLR-2242.solr3.1-fix.patch,
> SOLR-2242.solr3.1.patch, SOLR.2242.solr3.1.patch, SOLR-2242-solr40-3.patch
>
>
> When returning facet.field=<name of field> you will get a list of matches for
> distinct values. This is normal behavior. This patch tells you how many
> distinct values you have (# of rows). Use with limit=-1 and mincount=1.
> The feature is called "namedistinct". Here is an example:
> Parameters:
> facet.numTerms or f.<field>.facet.numTerms = true (default is false) - turn
> on distinct counting of terms
> facet.field - the field to count the terms
> It creates a new section in the facet section...
> http://localhost:8983/solr/select?shards=localhost:8983/solr,localhost:7574/solr&indent=true&q=*:*&facet=true&facet.mincount=1&facet.numTerms=true&facet.limit=-1&facet.field=price
> http://localhost:8983/solr/select?shards=localhost:8983/solr,localhost:7574/solr&indent=true&q=*:*&facet=true&facet.mincount=1&facet.numTerms=false&facet.limit=-1&facet.field=price
> http://localhost:8983/solr/select?shards=localhost:8983/solr,localhost:7574/solr&indent=true&q=*:*&facet=true&facet.mincount=1&facet.numTerms=true&facet.limit=-1&facet.field=price
> This currently only works on facet.field.
> {code}
> <lst name="facet_counts">
> <lst name="facet_queries"/>
> <lst name="facet_fields">...</lst>
> <lst name="facet_numTerms">
> <lst name="localhost:8983/solr/">
> <int name="price">14</int>
> </lst>
> <lst name="localhost:8080/solr/">
> <int name="price">14</int>
> </lst>
> </lst>
> <lst name="facet_dates"/>
> <lst name="facet_ranges"/>
> </lst>
> OR with no sharding-
> <lst name="facet_numTerms">
> <int name="price">14</int>
> </lst>
> {code}
> Several people use this to get the group.field count (the # of groups).
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