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https://issues.apache.org/jira/browse/SOLR-8988?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15296924#comment-15296924
 ] 

ASF subversion and git services commented on SOLR-8988:
-------------------------------------------------------

Commit ab87a0e75641d3e4076b9f4c247339f9d9c47103 in lucene-solr's branch 
refs/heads/branch_6x from [~dpgove]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=ab87a0e ]

SOLR-8988: Adds query option facet.distrib.mco which when set to true allows 
the use of facet.mincount=1 in cloud mode


> Improve facet.method=fcs performance in SolrCloud
> -------------------------------------------------
>
>                 Key: SOLR-8988
>                 URL: https://issues.apache.org/jira/browse/SOLR-8988
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Keith Laban
>         Attachments: SOLR-8988.patch, SOLR-8988.patch, SOLR-8988.patch, 
> SOLR-8988.patch, Screen Shot 2016-04-25 at 2.54.47 PM.png, Screen Shot 
> 2016-04-25 at 2.55.00 PM.png
>
>
> This relates to SOLR-8559 -- which improves the algorithm used by fcs 
> faceting when {{facet.mincount=1}}
> This patch allows {{facet.mincount}} to be sent as 1 for distributed queries. 
> As far as I can tell there is no reason to set {{facet.mincount=0}} for 
> refinement purposes . After trying to make sense of all the refinement logic, 
> I cant see how the difference between _no value_ and _value=0_ would have a 
> negative effect.
> *Test perf:*
> - ~15million unique terms
> - query matches ~3million documents
> *Params:*
> {code}
> facet.mincount=1
> facet.limit=500
> facet.method=fcs
> facet.sort=count
> {code}
> *Average Time Per Request:*
> - Before patch:  ~20seconds
> - After patch: <1 second
> *Note*: all tests pass and in my test, the output was identical before and 
> after patch.



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