[Zope-dev] SESSION loosing data when system has multiple users

[Steve Jibson]

We have been using Zope 2.7.0-beta2 and we have been having a bit of 
trouble with SESSION loosing data when we have more than one user on the 
system.  These problems usually show up as KeyErrors when a particular 
data element in SESSION cannot be found.  If I set the zserver threads 
to 1 in zope.conf, the problem seems to go away (but the system isn't 
really usable either).  So I assumed it was a thread-safety problem in 
the SESSION code.

I decided to be brave and take a look at the code.  To my surprize, I 
found a test file called stresstestMultiThread.py in the 
lib/python/Products/Sessions/stresstests directory that seemed to be the 
exact thing I wanted to test.  It wouldn't run without a couple of minor 
modifications, but once I got it running, with more than three or four 
threads, the tests fail (never complete).

Is this test file still valid?  It looks like it hasn't been modified 
for almost a year now.  If it is valid, has anyone looked into getting 
the tests to pass.  I will probably look into it more myself, but before 
I do, I just want to make sure I'm not headed down a dead-end street.


Thanks,

Steve

P.S. - The tests failed in both the 2.7.0b2-src and the what is 
currently in cvs.