Igniters, please, take a look at IEP-117: Pluggable Storages Support [1] which is a proposal for Apache Ignite 3.
The main idea is to have the possibility to support various storages for different tables in order to provide the best suitable storage engine for a user's data. 1. https://cwiki.apache.org/confluence/display/IGNITE/IEP-117%3A+Pluggable+Storages+Support