On 12/09/2016 15:54, Roberto De Ioris wrote:
Hi list,
We've hit a known python bug and are wondering how to workaround it when
using uWSGI as our app container.
In a nutshell, the underlying _strptime module used by Python (in things
like time.strptime) is not thread safe. The official workaround when
working in a threaded environment is to import _strptime before starting
threads. For background on the bug see: http://bugs.python.org/issue7980
and
http://stackoverflow.com/questions/2427240/thread-safe-equivalent-to-pythons-time-strptime
We have a Flask app (python 2.7 code) running under threaded uWSGI.
Relevant config lines:
processes: 4
threads: 50
thunder-lock: true
thread-stacksize: 512
home: /opt/webapps/venvs/%n
pythonpath: /srv/webapps/%n
wsgi-file: /srv/webapps/%n/run.py
callable: app
Is there a way we can instruct uWSGI to import _strptime before starting
any threads? Apparently this is possible with mod_wsgi (see:
http://modwsgi.readthedocs.io/en/develop/user-guides/application-issues.html#non-blocking-module-imports).
Many thanks,
Charlie
The --shared-pyimport <import> option should be enough(import can be an
ad-hoc module where you call strptime)
Thanks Roberto, that fixed it!
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