id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	launchpad_bug
1700	nondeterminstic failure of test_filesystem_with_cli_in_subprocess due to timeout	davidsarah	somebody	"{{{
    test_filesystem_with_cli_in_subprocess ... Traceback (most recent call last):
  File ""/usr/local/lib/python2.7/dist-packages/Twisted-11.0.0-py2.7-linux-x86_64.egg/twisted/internet/defer.py"", line 133, in maybeDeferred
    result = f(*args, **kw)
  File ""/home/zooko/playground/tahoe-lafs/pristine/src/allmydata/util/pollmixin.py"", line 34, in _poll
    raise TimeoutError(""PollMixin never saw %s return True"" % check_f)
allmydata.util.pollmixin.TimeoutError: PollMixin never saw <bound method SystemTest._check_connections of <allmydata.test.test_system.SystemTest testMethod=tes
t_filesystem_with_cli_in_subprocess>> return True
[ERROR]
}}}

warner wrote:
> there's a function-scoped variable in the test named ""{{{introducer}}}"", and a function that closes over it called {{{_wait_until_idle()}}}, which polls its ""outstanding message"" count waiting for it to drop to zero
>
> then later, the introducer gets replaced with a new one
>
> {{{_wait_until_idle}}} is still watching the old introducer, and doesn't notice the outstanding messages on the new one"	defect	closed	normal	1.9.2	code	1.9.1	fixed	test heisenbug introducer