TestRPC.test_cleanup_notifier_null fails with timeout

[Balazs Gibizer]

Seen at least twice on two unrelated patches.
http://logs.openstack.org/43/446243/44/gate/gate-nova-python35/33e584a/console.html#_2017-07-20_05_07_52_157927
http://logs.openstack.org/77/453077/16/check/gate-nova-python35/b42eecb/console.html#_2017-07-25_16_02_33_600471

Signature: http://logstash.openstack.org/#dashboard/file/logstash.json?query=message%3A%5C%22nova.tests.unit.test_rpc.TestRPC.test_cleanup_notifier_null%20%5B%5D%20...%20inprogress%5C%22

[Balazs Gibizer (balazs-gibizer)]

In both occurrences [1][2] the executor which times out prints "Fatal Python error: Cannot recover from stack overflow." way before the actual timeout.
We have a separate bug open for that https://bugs.launchpad.net/nova/+bug/1685333

[1] http://logs.openstack.org/77/453077/16/check/gate-nova-python35/b42eecb/console.html#_2017-07-25_16_01_58_308549
[2] http://logs.openstack.org/43/446243/44/gate/gate-nova-python35/33e584a/console.html#_2017-07-20_05_07_21_810915

[Balazs Gibizer (balazs-gibizer)]

Based on logstash there was no new appearance of this problem since the related patch https://review.openstack.org/507239 was merged so I think the related patch actually fixed the problem. So this can be closed.