On Wed, Jul 14, 2010 at 19:22, Benji York <benji@benjiyork.com> wrote:
[...]
Let me make sure I understand your setup: you have a TemporaryStorage running on a central server that is exposed via ZEO to clients. Right?
So, when the ZEO server restarts the temp storage is reset (it's contents don't survive a restart by design), but the clients don't know all the objects they "know" about in the temp storage just disappeared. Therefore when they go to load one (because it wasn't in their object or ZEO caches), the load fails.
Not surprising really.
What could be surprising is that, since the objects are not in the object cache or the ZEO cache, how can the clients 'know' about them to request them? And the answer is probably that there are other objects which ARE in the object cache, or the ZEO cache and that hold references (ghost objects in the case of the object-cache) to the objects in the zeo-distributed temporary storage. So, perhaps, Sebastian can avoid a Zope restart if he finds a way to flush all caches. Flushing the object caches is easy, it's in the Control_Panel. Flushing the ZEO cache is something else. Perhaps he can run with a 0-sized ZEO cache for the TempStorages? Cheers, Leo