Solr 1.4 is very old. There may have been breaking changes in between. Plus you would need to install each major version and then upgrade. Could be time consuming. If you have the data, best would be to reindex.
Regards Puneet On Wed, 21 Apr, 2021, 13:02 shacky, <shack...@gmail.com> wrote: > Thanks. > What about upgrading major to major 1 to 2, 2 to 3, ... , 7 to 8? > Bye > > Il giorno mer 21 apr 2021 alle ore 09:25 Puneet Pawaia < > puneet.paw...@gmail.com> ha scritto: > > > Hi, > > > > You'll need to reindex. > > > > Upgrade of index is supported from one major version below. > > > > Regards > > Puneet > > > > On Wed, 21 Apr, 2021, 12:32 shacky, <shack...@gmail.com> wrote: > > > > > Hi, > > > I have a very old Solr installation (VERY old: Solr 1.4.1 running on > > Ubuntu > > > 12.04) which I would like to upgrade to the latest Solr version 8.8.2 > on > > > Debian Buster. > > > > > > Will I be able to migrate the index or should I reindex all documents? > > > > > > Thank you very much! > > > Bye > > > > > >
