Session cache backend or cache API failure

[Calvin Spealman]

I've spent all day diagnosing this with no success. I would get random
errors in logs with the traceback below, showing a failure to create a
new session. Memcache logs show all 10000 tries succeeding (I have
also confirmed the empty sessions are still held in cache after). From
what I can see, session.backends.cache tries 10,000 keys that are all
successful, but it thinks they fail and ignores the success. This only
happens in about 1% of requests.

<31 add 980bdad78f56a4d24e0eebf43625918a 1 1209600 6
> NOT FOUND 980bdad78f56a4d24e0eebf43625918a
>31 STORED
<31 get a0948fa9c0add4b803ba85d5939b5a2c
> NOT FOUND a0948fa9c0add4b803ba85d5939b5a2c
>31 END
<31 get a0948fa9c0add4b803ba85d5939b5a2c
> NOT FOUND a0948fa9c0add4b803ba85d5939b5a2c
>31 END
<31 add a0948fa9c0add4b803ba85d5939b5a2c 1 1209600 6
> NOT FOUND a0948fa9c0add4b803ba85d5939b5a2c
>31 STORED
<31 get 74b1dcca57f28779305180995d362136
> NOT FOUND 74b1dcca57f28779305180995d362136
>31 END
<31 get 74b1dcca57f28779305180995d362136
> NOT FOUND 74b1dcca57f28779305180995d362136
>31 END
<31 add 74b1dcca57f28779305180995d362136 1 1209600 6
> NOT FOUND 74b1dcca57f28779305180995d362136
>31 STORED
<31 connection closed.

File "/opt/faircompanies/env/lib/python2.5/site-packages/
flup-1.0.3.dev_20090612-py2.5.egg/flup/server/fcgi_base.py", line 558,
in run
protocolStatus, appStatus = self.server.handler(self)
File "/opt/faircompanies/env/lib/python2.5/site-packages/
flup-1.0.3.dev_20090612-py2.5.egg/flup/server/fcgi_base.py", line
1118, in handler
result = self.application(environ, start_response)
File "/opt/faircompanies/env/lib/python2.5/django/core/handlers/
wsgi.py", line 239, in __call__
response = self.get_response(request)
File "/opt/faircompanies/env/lib/python2.5/django/core/handlers/
base.py", line 67, in get_response
response = middleware_method(request)
File "/opt/faircompanies/fc/django_authopenid/middleware.py", line
11, in process_request
request.openid = request.session.get('openid', None)
File "/opt/faircompanies/env/lib/python2.5/django/contrib/sessions/
backends/base.py", line 63, in get
return self._session.get(key, default)
File "/opt/faircompanies/env/lib/python2.5/django/contrib/sessions/
backends/base.py", line 172, in _get_session
self._session_cache = self.load()
File "/opt/faircompanies/env/lib/python2.5/django/contrib/sessions/
backends/cache.py", line 16, in load
self.create()
File "/opt/faircompanies/env/lib/python2.5/django/contrib/sessions/
backends/cache.py", line 33, in create
raise RuntimeError("Unable to create a new session key.")
RuntimeError: Unable to create a new session key

[Ales Zoulek]

Hello,

I've the same problem there..

Did you find out any solution? Or at least the source of the problem?


Regards,


Ales

------------------------------------------------------
Ales Zoulek
Jabber: ales....@gmail.com
------------------------------------------------------

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