[ZODB-Dev] ValueError: Can not re-register object under a different oid

[Greg Czajkowski]

Hi Jeremy,
Because the client will crash during commit() if I
shutdown the server process, I changed my add data
function to catch the crash/disconnect, sleep for a
while, then try to reconnect. During the reconnect,
the btree data object is rebound, the data is added to
the btree again and recommitted. So the btree object
will have a different oid. Again Im speculating this
is what is happening since it's pretty hard to catch
these errors. I have to experiment some more.

--G

> > ValueError: Can not re-register object under a
> > different oid
> > 
> > I am testing a while,try,catch
> ValueError,sleep,retry
> > but Im speculating whether that will work.
> 
> I don't think there's any reason to expect it to
> work ;-).
> If the object is already registered under a
> different oid, there's no
> reason to expect the a sleep() call will change its
> oid.
> 
> Can you explain what the transaction did before
> committing?  I don't
> understand how the object can have two oids.
> 
> Jeremy
> 
> 


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