Any chance you’re logging in with the Cassandra user? It uses quorum reads.
On Fri, Nov 23, 2018 at 11:38 AM Vitali Dyachuk <vdjat...@gmail.com> wrote: > Hi, > We have recently met a problem when we added 60 nodes in 1 region to the > cluster > and set an RF=60 for the system_auth ks, following this documentation > https://docs.datastax.com/en/cql/3.3/cql/cql_using/useUpdateKeyspaceRF.html > However we've started to see increased login latencies in the cluster 5x > bigger than before changing RF of system_auth ks. > We have casandra runner written is csharp, running against the cluster, > when analyzing the logs we notices that Rebuilding token map is taking > most of the time ~20s. > When we changed RF to 3 the issue has resolved. > We are using C* 3.0.17 , 4 DC, system_auth RF=3, "CassandraCSharpDriver" > version="3.2.1" > I've found somehow related to my problem ticket > https://datastax-oss.atlassian.net/browse/CSHARP-436 but it says in the > related tickets, that the issue with the token map rebuild time has been > fixed in the previous versions of the driver. > So my question is what is the best recommendation of the setting > system_auth ks RF? > > Regards, > Vitali Djatsuk. > > > -- Jon Haddad http://www.rustyrazorblade.com twitter: rustyrazorblade
