Recently I did upgrade from 8.9. Out of all those things mentioned on the Solr pages you need to specifically check solrj changes. Streaming ,if you are using docker then docker version.
Thanks Subhasis Patra 240-755-2601 subhasis.pa...@e2open.com<mailto:subhasis.pa...@e2open.com> From: Houston Putman <hous...@apache.org> Sent: Tuesday, May 16, 2023 10:13 AM To: users@solr.apache.org Subject: Re: Upgrade to solr cloud 9 from solr cloud 8.10 PHISH ALERT! CHECK VALIDITY IF CLICKING, SHARING, RESPONDING There is specific guidance for rolling upgrades from Solr 8.x to 9.x. Please see here: https://solr.apache.org/guide/solr/latest/upgrade-notes/major-changes-in-solr-9.html#rolling-upgrades<https://solr.apache.org/guide/solr/latest/upgrade-notes/major-changes-in-solr-9.html#rolling-upgrades> In particular, if you are using Auth and using the PKIAuthenticationPlugin, there are steps you must complete to ensure a smooth upgrade. - Houston On Tue, May 16, 2023 at 9:55 AM Shawn Heisey <apa...@elyograg.org<mailto:apa...@elyograg.org>> wrote: > On 5/16/23 00:25, Saksham Gupta wrote: > > Hi team, We are planning to migrate our solr cloud from solr version8.10 > to > > solr 9. > > 1. Is it okay to plan a rolling upgrade from solr8.10 to 9? > > 2. Is this a major update? If yes, what should be the upgrade procedure? > > I haven't done a major version upgrade of a multi-node cluster before. > I would expect a rolling upgrade to work correctly, and that is the > procedure in the documentation: > > > https://solr.apache.org/guide/solr/latest/deployment-guide/upgrading-a-solr-cluster.html<https://solr.apache.org/guide/solr/latest/deployment-guide/upgrading-a-solr-cluster.html> > > One thing to note... if your Solr 8 indexes have EVER been touched by a > Solr version before 8.0, they will not be usable in Solr 9. So if you > upgraded from Solr 7 to Solr 8, you will have to reindex from scratch. > > Thanks, > Shawn >
