I am working with Solr facet fields and come across a performance problem I don't understand. Consider these two queries:
1. q=word&facet.field=CONTENT&facet=true&facet.prefix=&facet.limit=10&facet.mincount=1&facet.method=enum&rows=0 2. q=word&facet.field=CONTENT&facet=true&facet.prefix=a&facet.limit=10&facet.mincount=1&facet.method=enum&rows=0 The only difference is am empty facet.prefix in the first query. The first query returns after some 20 seconds (QTime 20000 in the result) while the second one takes only 80 msec (QTime 80). Why is this? And as side note: facet.method=fc makes the queries run 'forever' and eventually fail with org.apache.solr.common.SolrException: Too many values for UnInvertedField faceting on field CONTENT. This is with Solr 1.4.
