That is a really old version. Migration is not possible. Officially, indexes are compatible across 1 major version change. Even the config files are not guaranteed to work directly. Would suggest, create everything from scratch with old files as reference. Then re-index.
On Apr 21 2021, at 12:31 pm, 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 >
