After reading the Stateful Functions documentation, I am left wondering how
remote stateful functions scale.
The documentation mentions that the use of remote functions allows the
state and compute tiers to scale independently. But the documentation seems
to imply that only a single instance of a function type can execute at a
time per worker ("*When an application starts, each parallel worker of the
framework will create one physical object per function type. This object
will be used to execute all logical instances of that type that are run by
that particular worker.*") That would seem to tie and limit the parallelism
of the compute layer to that of the storage layer even when using remote
functions.
Can a worker execute multiple concurrent remote stateful functions of
different types?
Can a worker execute multiple concurrent remote stateful functions of the
same type with different keys?
If a worker can execute multiple concurrent remote stateful functions of
the same type with different keys, does it ensure their output is ordered
like its inputs?
