Hi Marco,
Sorry that current statebackend is a global configuration and could
not be configured differently for different operators.
One possible alternative option to this requirements might be set rocksdb
as the default statebackend, and for those operators that want to put state
in memory,
Is it possible to use different statebackends for different operators?
There are certain situations where I want the state to reside completely in
memory, and other situations where I want it stored in rocksdb.
