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https://issues.apache.org/jira/browse/SOLR-10548?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15980390#comment-15980390
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Yonik Seeley commented on SOLR-10548:
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Thanks for the pointer, looks interesting! I've linked another issue for the
implementation.
> hyper-log-log based numBuckets for faceting
> -------------------------------------------
>
> Key: SOLR-10548
> URL: https://issues.apache.org/jira/browse/SOLR-10548
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Components: Facet Module
> Reporter: Yonik Seeley
>
> numBuckets currently uses an estimate (same as the unique function detailed
> at http://yonik.com/solr-count-distinct/ ). We should either change
> implementations or introduce a way to optionally select a hyper-log-log based
> approach for a better estimate with high field cardinalities.
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