: What is the implication of this? Should we move all facets to DocValues : when we have high cardinality (lots of values) ? Are we adding it back?
1) Using DocValues is almost certainly a good idea moving forward for situations where the FieldCache was used in the past. : FieldCache is gone (moved to a dedicated UninvertingReader in the miscmodule). 2) Solr implicitly uses the UninvertingReader under the covers on your behalf automatically in cases where FieldCache is not available. -Hoss http://www.lucidworks.com/