Comment 2 for bug 1518921

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Hong Hui Xiao (xiaohhui) wrote : Re: Functional tests failing inside _test_restart_service_on_sighup with "Timed out waiting for file /tmp/XXX/YYY/test_server.tmp to be created and its size become equal to ZZZ"

I think it might be the reason that the wait time is not long enough. There is no waiting for the restart to complete, just 5 seconds. IMO, the easiest solution is to enlarge the number at [1], but I don't have strong proof for this result.

[1] https://github.com/openstack/neutron/blob/master/neutron/tests/functional/test_server.py#L153