David Smiley created SOLR-7878: ---------------------------------- Summary: Use SortedNumericDocValues (efficient sort & facet on multi-valued numeric fields) Key: SOLR-7878 URL: https://issues.apache.org/jira/browse/SOLR-7878 Project: Solr Issue Type: Improvement Components: Facet Module Reporter: David Smiley
Lucene has a SortedNumericDocValues (i.e. multi-valued numeric DocValues), ever since late in the 4x versions. Solr's TrieField.createFields unfortunately still uses SortedSetDocValues for the multi-valued case. SortedNumericDocValues is more efficient than SortedSetDocValues; for example there is no 'ordinal' mapping for sorting/faceting needed. Unfortunately, updating Solr here would be quite a bit of work, since there are backwards-compatibility concerns, and faceting code would need a new code path implementation just for this. Sorting is relatively simple thanks to SortedNumericSortField, and today multi-valued sorting isn't directly possible. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org