No. You can just update Solr in place. But... If you're using Solr Cloud, your documents won't be hashed in a way that lets you do shard splitting in 4.2. That seemed to be the consensus during Solr Boot Camp.
Michael Della Bitta ------------------------------------------------ Appinions 18 East 41st Street, 2nd Floor New York, NY 10017-6271 www.appinions.com Where Influence Isn’t a Game On Sun, Feb 10, 2013 at 10:46 AM, adfel70 <adfe...@gmail.com> wrote: > Do I have to recreate the collections/cores? > Do I have to reindex? > > thanks. > > > > -- > View this message in context: > http://lucene.472066.n3.nabble.com/Do-I-have-to-reindex-when-upgrading-from-solr-4-0-to-4-1-tp4039560.html > Sent from the Solr - User mailing list archive at Nabble.com.