Have you tried restarting your application? It should renegotiate the protoco during handshake and should resolve the issue.
On Wed, Jul 28, 2021 at 3:06 PM Srinivas Polamarasetty < srinivas.polamarase...@logmein.com> wrote: > Query shows 4 but App team also getting below error. They were not able to > communicate with this node. > > > > com.datastax.driver.core.exceptions.CodecNotFoundException: Codec not found > for requested operation: ['org.apache.cassandra.db.marshal.ShortType' <-> > java.lang.Short] > > > > > > [2021-07-09 23:26:52.382 -0700] <cluster1-nio-worker-1> > com.datastax.driver.core.Connection - DEBUG: Got unsupported protocol > version error from /<ip>:<port> for version V4 server supports version V3 > > [2021-07-09 23:26:52.382 -0700] <cluster1-nio-worker-1> > com.datastax.driver.core.Connection - DEBUG: Connection[//<ip>:<port> -1, > inFlight=0, closed=true] closing connection > > [2021-07-09 23:26:52.382 -0700] <cluster1-nio-worker-1> > com.datastax.driver.core.Host.STATES - DEBUG: [//<ip>:<port>] > Connection[/10.39.38.166:9042-1, inFlight=0, closed=true] closed, > remaining = 0 > > [2021-07-09 23:26:52.383 -0700] <main> com.datastax.driver.core.Cluster - > DEBUG: Cannot connect with protocol V4, trying V3 > > > > > > > > > > Regards, > > Srinivas P > > > > > > *From: *Erick Ramirez <erick.rami...@datastax.com> > *Date: *Wednesday, 28 July 2021 at 12:39 PM > *To: *user@cassandra.apache.org <user@cassandra.apache.org> > *Subject: *Re: Issue with native protocol > > Someone asked me about the same issue a couple of months ago and we never > managed to figure out why the wrong version is being displayed. > > > > Could you try to run `SELECT native_protocol_version FROM system.local`? > It should come back with 4. Cheers! >
