Hello abhyad, I can see that you asked the same question on our blog, so I've taken the liberty to copy my answer to this mailing list so that more people can benefit from the discussion.
On Sat, 2011-10-08 at 00:46 +0200, abhayd wrote: > i need pivot kind of facet functionality but for multipath hierarchy. > > I am using 4.0 from trunk. Is this patch production ready? And where can i > see more details/docs on how to use it Production ready? Well, since you’re bold enough to use Solr 4.0 from trunk, I’d say yes :-) We’re using Lucene 4.0 trunk + the mentioned faceting patch in production so the basic functionality seems fairly solid. While the Solr-code is just a simple wrapper around that and seems to work fine, I cannot vouch for the stability of that part as we don’t use it actively. Now, Solr (and Lucene) trunk is a moving target so the patch only works for a given range of check-outs. If you are still interested, I’ll try and bring the patch up to speed with the newest truck or a specific checkout if you have one that you deem reliable. It might take a few weeks though, there’s a vacation coming up. Regards, Toke