Thanks for the answers Paulo and Bowen. Regards Manish
On Thu, Oct 3, 2024 at 8:24 PM Bowen Song via user < user@cassandra.apache.org> wrote: > The supported and recommend route for upgrading 3.x to 5.x is to upgrade > from 3.x to 4.x first, and then from 4.x to 5.x. > > Even if you've tested upgrading from 3.x to 5.x directly and it worked in > a test environment, it is still unsupported and not recommended. That's > because you may overlook some hidden issues which can bite you later. > > Please follow the tested and proven upgrade route if your data is valuable. > On 03/10/2024 08:30, manish khandelwal wrote: > > Hi All > > We were evaluating the upgrades of Cassandra clusters managed by us to > Cassandra 5.0. It's clear that Cassandra 4.0 to Cassandra 5.0 is supported. > But I am not sure what is the status with respect to upgrading Cassandra > 3.x to Cassandra 5.0. > > Some online resources I found say it is not possible and you should first > jump to Cassandra 4.x. Following resources talk about the upgrade path > > 1. > https://planetcassandra.org/news/top-5-questions-we-re-asked-about-apache-cassandra-r-5-0/ > 2. > https://www.instaclustr.com/blog/top-5-questions-were-asked-about-apache-cassandra-5-0/ > > Also Cassandra 5.0 announcement says, "Upgrading from 4.x to 5.0 has been > designed and tested as an online upgrade, minimizing downtime for your > applications." Here is the link > <https://cassandra.apache.org/_/blog/Apache-Cassandra-5.0-Announcement.html> > . > > Meanwhile there is a slack discussion > <https://the-asf.slack.com/archives/CJZLTM05A/p1726630791029329> based on > which my understanding is that there should not be an issue for upgrading > to Cassandra 5.0 from Cassandra 3.x. > > I tried upgrading path (3.11.12- -> 5.0.0) using ccm but ccm seems to not > allow me to change the JAVA version on one node and is picking the > JAVA_HOME set on the machine. > > It would be of great help if somebody could confirm if Cassandra upgrade > from 3.11.x to 5.0.0 is supported or not? > > Regards > Manish > >
