Hi, On Thu, Jul 29, 2021 at 9:44 AM Erick Ramirez <erick.rami...@datastax.com> wrote: > When you restart C*, you should have an entry in the logs which look like > this that indicates it defaults to v4: > > INFO [main] 2021-07-28 20:45:31,178 StorageService.java:650 - Native > protocol supported versions: 3/v3, 4/v4, 5/v5-beta (default: 4/v4) > > I'm hoping someone else here on the mailing list can give pointers as to why > a 3.11 node would advertise v3. I've been code-diving and scratching my head. > I can't think of a scenario that would lead to this: > > [cqlsh 5.0.1 | Cassandra 3.11.5 | CQL spec 3.4.4 | Native protocol v3]
If possible, one way to debug this is to use Wireshark's CQL support to trace the CQL server/client communication. You can see what CQL binary protocol version the client asks for (in the header), and also any possible errors/fallback from the server. This should allow you to narrow down if this is a client or server issue. Hope this helps! Regards, - Pekka
