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https://issues.apache.org/jira/browse/SOLR-8222?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yonik Seeley updated SOLR-8222:
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Attachment: SOLR-8222.patch
Performance increase faceting 5M docs:
Field with 10 unique values: +31%
Field with 100 unique values: +29%
Field with 1000 unique values: +59%
Field with 10000 unique values: +88%
Field with 1M unique values: +115%
> Optimize count-only faceting when there are many expected matches-per-ord
> -------------------------------------------------------------------------
>
> Key: SOLR-8222
> URL: https://issues.apache.org/jira/browse/SOLR-8222
> Project: Solr
> Issue Type: Improvement
> Components: Facet Module
> Reporter: Yonik Seeley
> Assignee: Yonik Seeley
> Attachments: SOLR-8222.patch, SOLR-8222.patch, SOLR-8222.patch
>
>
> This optimization for the JSON Facet API came up a few months ago on the
> mailing list (I think by Toke).
> Basically, if one expects many hits per bucket, use a temporary array to
> accumulate segment ords and map them all at the end to global ords. This
> saves redundant segOrd->globalOrd mappings at the cost of having to scan the
> temp array.
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