Thanks for bringing this up, we really should document this and make sure the different upgrade paths are clearly documented and have proper coverage.
There was a conversation in slack a while back (started from https://the-asf.slack.com/archives/CK23JSY2K/p1595906733435000) but not formal or voted on, but the current upgrade targets were 3.0.x and 3.11.x (do others feel we should support other versions as well and if so what?). For features, COMPACT STORAGE is getting a lot of attention right now, so would love to see clarity on how we go from a cluster with COMPACT STORAGE to 4.0 (is there min version support, what is the upgrade path, what about deleted rows, etc.). This is what I know about the current state of 4.0 upgrades at least. On Thu, Oct 8, 2020 at 11:48 AM Joshua McKenzie <jmcken...@apache.org> wrote: > Related JIRA ticket: https://issues.apache.org/jira/browse/CASSANDRA-15588 > > Description: > > "We've historically had numerous bugs concerning upgrading clusters from > one version to the other. Let's establish the supported upgrade path and > ensure that users can safely perform the upgrades in production." > > So the topic of discussion here: what is our supported upgrade path to 4.0? > Is this actually documented on our site or in our documentation? Spent a > few minutes poking around and didn't find anything. > > Anyone have an opinion here or any formal prior art for us to build on? >
