hyperloglog

A 100% accurate count of distinct values (count distinct) is not generally possible without actually observing all of the values together. However there are a number of ways to estimate the count. “unique” Facet Function The unique facet function is Solr’s fastest implementation to calculate the number of distinct values. […]

Count Distinct in Solr

 in analytics / facets  tagged calcDistinct / cardinality performance / count distinct / distinct solr / facet cardinality / facet unique / hll performance / hyperloglog / hyperloglog solr / solr stats / stats component / unique solr / unique values by (updated on )
Here’s an overview of some of the new features in Solr 5.2 Also see Solr download links and upcoming features of the next Solr release. Solr caches can be limited by memory use Caches using the LRUCache implementation can specify a new parameter maxRamMB that will evict based on RAM […]

Solr 5.2 Features

 in solr / solr search  tagged backup index / cache memory / excludeTags / filter exclusions / hyperloglog / multi-select faceting / range facet mincount / restore index / solr 5 / solr 5.2 / solr expressions by (updated on )