[Zope] KeyErrors in Zope using ZEO

[Bakhtiar A Hamid]

On 5/12/07, Mike Patterson <mpatterson at ltgc.com> wrote:
> Hi,
>     We've been experiencing two KeyError problems with Zope since moving
> to a ZEO environment at the beginning of the year.  On the server that
> the ZEO server resides we have 3 Zope instances running, and each of
> them gets a KeyError about once or twice a week individually.
> Restarting the offending instance takes care of the issue, but I was
> wondering if anyone has an idea of why we would be seeing these.
>
> Thanks,
>     Mike
>
> The error that we get is:
>
> 2007-05-02T19:18:45 ERROR ZODB.Connection Couldn't load state for 0x1c2d6e
> Traceback (most recent call last):
>   File "/opt/Plone-2.5/lib/python/ZODB/Connection.py", line 732, in setstate
>     self._setstate(obj)
>   File "/opt/Plone-2.5/lib/python/ZODB/Connection.py", line 768, in
> _setstate
>     p, serial = self._storage.load(obj._p_oid, self._version)
>   File "/opt/Plone-2.5/lib/python/ZEO/ClientStorage.py", line 746, in load
>     return self.loadEx(oid, version)[:2]
>   File "/opt/Plone-2.5/lib/python/ZEO/ClientStorage.py", line 774, in loadEx
>     self._cache.store(oid, ver, tid, None, data)
>   File "/opt/Plone-2.5/lib/python/ZEO/cache.py", line 293, in store
>     self.fc.add(o)
>   File "/opt/Plone-2.5/lib/python/ZEO/cache.py", line 980, in add
>     available = self._makeroom(size)
>   File "/opt/Plone-2.5/lib/python/ZEO/cache.py", line 915, in _makeroom
>     size, e = self.filemap.pop(ofs)
> KeyError: 19826745
>

looks like there may be problems with the cache file.  try not using
the cache file and see whether that helps by removing name zeostrorage
on each clients.


hth
-- 
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