Is there any support in clover for distributing the transformation over a cluster of nodes?
Clover currently supports clustering in CloverServer product and it is focused on load balancing and fail-over. It means that there can be several CloverServers connected into a cluster where one server acts as a master and distributes requests/transformations runs over set of workers.
It currently does not support distributing run of one transformation over several workers. Transformation runs on one particular node/worker only.
The full distribution of transformation run is currently under development and will be part of new release of CloverServer. It will allow one transformation to be run concurrently on several nodes each processing subset of data - thus achieving almost a linear scalability.