The error message looks a lot like this bug https://issues.apache.org/jira/browse/SOLR-7495
group.faceting is broken for numeric values. Does it mean that I have to enable docvalues for every field that I want to facet on? On 24 Sep 2015, at 17:02, Tomoko Uchida <tomoko.uchida.1...@gmail.com<mailto:tomoko.uchida.1...@gmail.com>> wrote: Hi, Of course the Doc Values data structure can be used by anything who wants to retrieve the column base view of documents per field, but is anywhere documented all the ways it's used in Solr ? According to the Solr guide about docvalues, it is used in faceting, sorting, and grouping. https://cwiki.apache.org/confluence/display/solr/DocValues In Lucene 4.0, a new approach was introduced. DocValue fields are now column-oriented fields with a document-to-value mapping built at index time. This approach promises to relieve some of the memory requirements of the fieldCache and make lookups for faceting, sorting, and grouping much faster. I'm not sure about other docvalues uses not mentioned here... I'd also like to know if there are. Thanks, Tomoko 2015-09-24 17:26 GMT+09:00 Alessandro Benedetti <benedetti.ale...@gmail.com> : I didn't know DocValues to be used apart from sorting and faceting (fc algorithm) on fields. Of course the Doc Values data structure can be used by anything who wants to retrieve the column base view of documents per field, but is anywhere documented all the ways it's used in Solr ? Cheers 2015-09-24 2:33 GMT+01:00 Shawn Heisey <apa...@elyograg.org>: On 9/18/2015 3:27 PM, Shawn Heisey wrote: A query that works fine in Solr 4.9.1 doesn't work in 5.2.1 with the same schema. The field that I am grouping on does not have docValues. I get this exception: java.lang.IllegalStateException: unexpected docvalues type SORTED_SET for field 'ip' (expected=SORTED). Use UninvertingReader or index with docvalues. No response in five days ... I guess I'll go ahead and raise that issue. Thanks, Shawn -- -------------------------- Benedetti Alessandro Visiting card - http://about.me/alessandro_benedetti Blog - http://alexbenedetti.blogspot.co.uk "Tyger, tyger burning bright In the forests of the night, What immortal hand or eye Could frame thy fearful symmetry?" William Blake - Songs of Experience -1794 England
