Considering that this feature is not supported in Cassandra, I would suggest replacing the latter with Ignite in general.
Just enable Ignite persistence [1] and you will get all the features Cassandra offers plus those supported by Ignite only - ACID transactions, SQL with joins, full-fledged in-memory storage. [1] https://apacheignite.readme.io/docs/distributed-persistent-store — Denis > On Oct 25, 2017, at 9:14 AM, Igor Rudyak <irud...@gmail.com> wrote: > > Ignite-Cassandra module doesn't support Cassandra complex types like > map<text, text>. Only BLOB and simple types which could be directly mapped > to appropriate java types are supported. > > > > -- > Sent from: http://apache-ignite-users.70518.x6.nabble.com/