Do you need to preserve your index data or are you able to fully re-index all data from scratch? If the former, you will need to upgrade from 4 to 5 first, then force a full optimize to fully upgrade all index segments to 5 format, and then upgrade from 5 to 6. In fact, if you had originally upgraded from 3 to 4, you may need to force a full optimize on 4 to assure that any lingering old 3 format index segments are in 4 format.
-- Jack Krupansky On Thu, Apr 7, 2016 at 12:10 PM, Erick Erickson <erickerick...@gmail.com> wrote: > The release vote just passed, 6.0 should be released in a very few days. > > Best, > Erick > > On Thu, Apr 7, 2016 at 8:48 AM, Ben Earley <bdearle...@gmail.com> wrote: > > Hi there, > > > > My team has been using Solr 4 on a large distributed system and we are > > interested in upgrading to Solr 6 when the new version is released to > > leverage some of the new features, such as graph queries. Is anyone able > > to provide any insight as to the release schedule for this new version? > > > > Thanks, > > > > Ben Earley >