def test_round_trip_rdd(self):
subs = [(1, 1, 1), (2, 1, 1), (1, 2, 1), (2, 2, 1), (1, 3, 1), (2, 3, 1),
(1, 1, 2), (2, 1, 2), (1, 2, 2), (2, 2, 2), (1, 3, 2), (2, 3, 2)]
dataLocal = map(lambda x: (x, array([1.0])), subs)
data = Series(self.sc.parallelize(dataLocal))
start = data.keys().collect()
stop = data.subToInd().indToSub().keys().collect()
assert(allclose(array(start), array(stop)))