Yes, we're looking at the right application version logs, and didn't see any stacktraces...
We had deserialization issues before which did show stacktraces in the logs (when user model changed in a newer version), and fixed them. We're not sure if the suggested workarounds will fix the issue, but we will have a go and let you know. Cheers, Jun On Friday, April 12, 2013 6:02:41 PM UTC-5, Jeff Schnitzer wrote: > > The OP says that they're getting a client-facing 500 error without > anything showing in the logs. If there was a serialization problem in > application code, the logs would show the stacktrace. > > OP, you're sure that you're looking at the right application version > in the logs? > > Jeff > > On Fri, Apr 12, 2013 at 4:55 PM, Vinny P <[email protected] <javascript:>> > wrote: > > On Friday, April 12, 2013 2:49:15 PM UTC-5, Simon Knott wrote: > >> > >> It could be completely unrelated to the User data model - if they are > >> storing any other serialized objects in the session which have had > their > >> structure updated between v15 and v17, then when the session object > gets > >> deserialized from the datastore/memcache, it will also have the same > >> symptoms. > >> > >> The suggested fixes would still resolve the issue as well. > >> > >> Cheers, > >> Simon > >> > > > > +1. > > > > Let me change what I wrote: Pretty much anything that has been > serialized > > could be breaking, if you changed the class between v15 and v17. I bet > it's > > the user model, because login is breaking and not anything else, but it > > could be a lot of other things. > > > > You still need to implement a way to version client session IDs; storing > it > > in the User model or the session attribute, both are fine. > > > > ----------------- > > -Vinny P > > Technology & Media Advisor > > Chicago, IL > > > > @GOV on AppDotNet: https://alpha.app.net/gov > > > > -- > > You received this message because you are subscribed to the Google > Groups > > "Google App Engine" group. > > To unsubscribe from this group and stop receiving emails from it, send > an > > email to [email protected] <javascript:>. > > To post to this group, send email to > > [email protected]<javascript:>. > > > Visit this group at > http://groups.google.com/group/google-appengine?hl=en. > > For more options, visit https://groups.google.com/groups/opt_out. > > > > > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/google-appengine?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
