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https://issues.apache.org/jira/browse/LUCENE-7519?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15604904#comment-15604904
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ASF subversion and git services commented on LUCENE-7519:
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Commit 0782b09571fc5ac3e92b566f9abc047b2bd7966c in lucene-solr's branch
refs/heads/master from Mike McCandless
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=0782b09 ]
LUCENE-7519: add optimized implementations for browse-only facets
> Optimize computing browse-only facets for taxonomy and sorted set methods
> -------------------------------------------------------------------------
>
> Key: LUCENE-7519
> URL: https://issues.apache.org/jira/browse/LUCENE-7519
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Fix For: master (7.0), 6.3
>
> Attachments: LUCENE-7519.patch
>
>
> For the "browse facets" use case, where logically you run
> {{MatchAllDocsQuery}} and then compute facet hits, we can optimize this case
> for both {{SortedSetDocValuesFacets}} and {{FastTaxonomyFacetCounts}} so that
> we don't use the query DISI at all and rather just pull from the doc values
> iterator using {{nextDoc}}.
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