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https://issues.apache.org/jira/browse/SOLR-8988?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dennis Gove closed SOLR-8988.
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Resolution: Fixed
Assignee: Dennis Gove
Fix Version/s: 6.1
Patch as been applied to master and 6x for release in 6.1. Note that I have
confirmed the patch does also apply to 5x if you should want to use this in a
later Solr 5.
> 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
> Assignee: Dennis Gove
> Fix For: 6.1
>
> 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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