[Zope] KeyErrors in Zope using ZEO

[Mike Patterson]

Removing the 'name zeostorage' didn't have any affect on the issue.  I 
was able to fix the KeyErrors by increasing the cache-size in the zeo 
client configuration part of the zope.conf though.

However, I'm still experiencing intermittent KeyErrors with the session 
stuff.  The line of code that always breaks is "session = 
REQUEST.SESSION"  and it has happened everywhere in my code that I use 
that.  Is there a better way to access the session that I should be 
using?  The traceback ends like this:

    * Module ZPublisher.HTTPRequest, line 1217, in __getattr__
    * Module ZPublisher.HTTPRequest, line 1177, in get
    * Module Products.Sessions.SessionDataManager, line 96, in
      getSessionData
    * Module Products.Sessions.SessionDataManager, line 183, in
      _getSessionDataObject
    * Module Products.Transience.Transience, line 846, in new_or_existing
    * Module Products.Transience.Transience, line 452, in __setitem__

I'm now using the exact same configuration for sessions as detailed in 
http://www.zopelabs.com/cookbook/1061234337 except the zeo server is on 
a different box than the clients.  Any ideas?

Thanks,
Mike


Bakhtiar A Hamid wrote:
> On 5/12/07, Mike Patterson <mpatterson at ltgc.com> wrote:
>> Hi,
>>     We've been experiencing two KeyError problems with Zope since moving
>> to a ZEO environment at the beginning of the year.  On the server that
>> the ZEO server resides we have 3 Zope instances running, and each of
>> them gets a KeyError about once or twice a week individually.
>> Restarting the offending instance takes care of the issue, but I was
>> wondering if anyone has an idea of why we would be seeing these.
>>
>> Thanks,
>>     Mike
>>
>
> looks like there may be problems with the cache file.  try not using
> the cache file and see whether that helps by removing name zeostrorage
> on each clients.
>
>
> hth