def __init__(self,
urls,
notifier=func.noop,
reader=func.chain_reader,
input_stream=(func.map_input_stream, ),
params=None,
ddfs=None):
from disco.task import Map
self.task = Map(jobdict=JobDict(
map_input_stream=input_stream, map_reader=reader, params=params))
self.urls = urls
self.notifier = notifier
self.ddfs = ddfs
