[Zope] Transience read conflicts

Dennis Allison allison at sumeru.stanford.EDU
Fri Feb 18 17:52:48 EST 2005


Thanks Chris -- looks like the raise was left in the released 2.7.3!
I've not yet checked the code, but that certainly is the behavior.

On Fri, 18 Feb 2005, Chris McDonough wrote:

> Nope, it's expected behavior for any application that writes to ZODB.
> Reraising it as an assertion error is the bug (Zope retries requests
> that encounter conflict errors unless you catch them).
> 
> On Fri, 2005-02-18 at 13:56 -0800, Dennis Allison wrote:
> > We are seeing occasional read conflicts in Transcience.
> > 
> > Traceback (innermost last):
> >    [...]]
> >   Module Products.PythonScripts.PythonScript, line 323, in _exec
> >   Module None, line 6, in setSessionVariable
> >    - <PythonScript at /setSessionVariable used for
> > /questionbanks/questionbank_edit/queries>
> >    - Line 6
> > AssertionError: Assignment to "currentQuestionBank" failed
> > database read conflict error (oid 0x1205, class
> > Products.Transience.TransientObject.TransientObject)
> > 
> > Zope 2.7.3
> > Pythn 2.3
> > 
> > Transcience apparently throws an exception rather than serialize.
> > Is that a bug?
> > 
> > Is this a bug?
> > 
> > 
> > 
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