java - How to add a column family in system_auth keyspace in Cassandra? -

java - How to add a column family in system_auth keyspace in Cassandra? -

i have live cluster (cassandra 2.0.9, cql spec 3.1.1) using allowallauthenticator @ moment, , want switch passwordauthenticator without downtime, i'm trying create system_auth key space , column families manually.

however, cassandra seems prevent users doing changes in system_auth key space. got:

cqlsh:system_auth> create table credentials ( ... username text, ... options map<text, text>, ... salted_hash text, ... primary key (username) ... ) gc_grace_seconds=7776000; bad request: cannot create <keyspace system_auth>

is there way around problem? datastax enterprise version has authenticator transitionalauthenticator allows no downwards time transition passwordauthenticator. there chance can used in open source version? thanks

java cassandra cql cql3 cqlsh