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Flaky test test_as_completed_with_results_no_raise #4512
Description
___________________ test_as_completed_with_results_no_raise ___________________
client = <Client: 'tcp://127.0.0.1:56432' processes=2 threads=2, memory=15.03 GB>
def test_as_completed_with_results_no_raise(client):
x = client.submit(throws, 1)
y = client.submit(inc, 5)
z = client.submit(inc, 1)
ac = as_completed([x, y, z], with_results=True, raise_errors=False)
y.cancel()
res = list(ac)
dd = {r[0]: r[1:] for r in res}
assert dd.keys() == {x, y, z}
> assert x.status == "error"
E AssertionError: assert 'cancelled' == 'error'
E - error
E + cancelledI'm consistently getting this at least on windows CI (linux and mac yet to be tested).
Cannot reproduce on local Linux.
It baffles me. The error does not seem to have anything to do with the as_completed function itself, and I cannot imagine how the x future can get cancelled on its own...
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