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 >
