We were using Solr 4 at one point and directly upgraded to Solr 7.1 and now are currently moving to 9.1. So it's definitely doable. Here are a couple of articles that were published by my team regarding the upgrade:
- https://nawabiqbal.medium.com/solr-upgrade-and-our-indexing-performance-b367cda3de5a - https://www.linkedin.com/pulse/solr-7-upgrade-testing-search-nawab-iqbal Hope they are helpful. On Tue, Feb 21, 2023 at 6:52 AM Lulu Paul <[email protected]> wrote: > > > CAUTION: External Email > > > > > Hi SOLR team, > > > > Please may I ask for some advice regarding upgrading the SOLR version (ours > currently running on solr-5.2.1) to the latest version? > > Currently looking at incremental version upgrades (from the SOLR Upgrade > notes I was hoping to move up to 6.x), But also wanted to know if moving > directly to 8.x or 9.x is a possibility? > > > > Ours is a standalone one with no collections and just 1 core. With approx.. > 3M documents > > > > What would be the most efficient way to upgrade and test? > > > > Much appreciate the advice, Thank you! > Lulu > -- Shubhro Roy, Engineering Manager, Search 900 Jefferson Ave Redwood City, CA 94063
