def receive_data_chunk(self, raw_data, start):
        if self.activated:
            self.file.write(raw_data)
        else:
            return raw_data
:returns: JSONized Cluster object.
dataset/ETHPy150Open adieu/django-nonrel/django/core/files/uploadhandler.py/MemoryFileUploadHandler.receive_data_chunk--crossover with--dataset/ETHPy150Open openstack/fuel-web/nailgun/nailgun/api/v1/handlers/cluster.py/ClusterHandler.PUT