Make SimpleAuthority work with Cassandra 1.1.6 permissions

A few days ago I was about to upgrade Cassandra cluster from 1.1.0 (+ Authentication patch I wrote) to 1.1.6, but – a bit surprisingly – I realized that something is wrong with new Cassandra. I had no problems with creating keyspaces before, as I set proper modify-keyspaces property in, but after the upgrade it stopped to work. After a short investigation I found out that there were some significant changes in Cassandra’s Permission system which broke SimpleAuthenticator. This article is about how to make it work again.

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