We have a fairly large (in the order of 10s of TB) indices built using Solr 3.5. We are considering migrating to Solr 4.3 and was wondering what the policy is on maintaining backward compatibility of the indices? Will 4.3 work with my 3.5 indexes? Because of the large data size, I would ideally like to move new data to 4.3 and gradually re-index all the 3.5 indices.
Thanks, - Skand.
