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!
