[ZODB-Dev] ZEO and setting instance variables in __getstate__

[Syver Enstad]

Tim Peters wrote:
> [Syver Enstad]
> 
>>I have recently upgraded from ZODB 3.2 to 3.5.1. After doing this I
>>notice that ZEO throws exceptions on commiting a transaction for certain
>>types of Persistent classes.
>>...
> 
> 
> I was able to create a small self-contained test case from this description,
> and opened a Collector issue containing it:
> 
>     http://www.zope.org/Collectors/Zope3-dev/526
> 
> As it says, I don't know whether it "should work", but offhand don't see why
> not.  As is, creating new state inside __getstate__ is confusing the heck
> out of ZEO's MVCC cache "for some reason".

I noticed that the collector issue source file has a comment that this 
is experienced on windows. My testing has been done on Linux Ubuntu 
Breezy Badger and I get the same error, (cur_tid < tid) fails there too.