Unfortunately, running Futures
cannot be cancelled. I believe the core reason is to ensure the same API over different implementations (it’s not possible to interrupt running threads or coroutines).
The Pebble library was designed to overcome this and other limitations.
from pebble import ProcessPool
def function(foo, bar=0):
return foo + bar
with ProcessPool() as pool:
future = pool.schedule(function, args=[1])
# if running, the container process will be terminated
# a new process will be started consuming the next task
future.cancel()