On Sun, Nov 7, 2010 at 2:45 PM, Papp Richard <ccode...@gmail.com> wrote: > Hi Yonik, > > I've just tried the latest stable version from nightly build: > apache-solr-4.0-2010-11-05_08-06-28.war > > I have some concerns however: I have 3 documents; 2 in the first group, 1 > in the 2nd group. > > 1. I got for matches 3 - which is good, but I still don't know how many > groups I have. (using start = 0, rows = 10) > 2. as far as I see the start / rows is working now, but the matches is > returned incorrectly => it said matches = 3 instead of = 1, when I used > start = 1, rows = 1
"matches" is the number of documents before grouping, so start/rows or group.offset/group.limit will not affect this number. > so can you help me, how to compute how many pages I'll have, because the > matches can't use for this. Solr doesn't even know given the current algorithm, hence it can't return that info. The issue is that to calculate the total number of groups, we would need to keep each group in memory (which could cause a big blowup if there are tons of groups). The current algorithm only keeps the top 10 groups (assuming rows=10) in memory at any one time, hence it has no idea what the total number of groups is. -Yonik http://www.lucidimagination.com
