On Mon, Aug 3, 2009 at 2:18 PM, Stephen Duncan Jr<stephen.dun...@gmail.com> wrote: > On Fri, Jul 31, 2009 at 5:23 PM, Yonik Seeley > <yo...@lucidimagination.com>wrote: > >> On Fri, Jul 31, 2009 at 5:06 PM, Stephen Duncan >> Jr<stephen.dun...@gmail.com> wrote: >> > I have a couple more questions on the FieldValueCache. I see that the >> > number of items in the cache is basically the number of multi-valued >> fields >> > facets have been requested for. What does each entry in the cache >> actually >> > contain? How does it's size grow as the number of total documents >> > increases? >> >> It's basically an array of int[maxDoc] that contain the list of >> delta-coded vint values or optionally point out to shared byte arrays >> if the list of values don't fit in an int. See the javadoc for >> UnInvertedField for more details. >> >> -Yonik >> http://www.lucidimagination.com >> > > I'm getting the following warning in my logs: 2009-08-03 13:41:40,114 > [http-127.0.0.1-8080-1] WARN org.apache.solr.core.SolrCore - Approaching > too many values for UnInvertedField faceting on field 'originaltext' : > bucket size=15802492 > > What's the impact of that? If the number of values (number of unique terms > for that field, or some other "values"?) exceeds that limit, will faceting > for that field go back to a different technique and be slower, or...?
It will throw an exception. This method of faceting wasn't really designed for big full-text fields. The enum method should work better for this... try something like the following: f.originaltext.facet.method=enum facet.enum.cache.minDf=10000 -Yonik http://www.lucidimagination.com
