[ZODB-Dev] Random POSKeyErrors

Andreas Jung lists at zopyx.com
Wed Jul 21 11:01:07 EDT 2010


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Pedro Ferreira wrote:
> Hello,
> 
> We are receiving occasional error messages such as:
> 
> """
> Traceback (most recent call last):
>    File 
> "/usr/lib/python2.4/site-packages/cds_indico-0.97_rc1-py2.4.egg/MaKaC/webinterface/rh/base.py", 
> line 459, in process
>      self._setSessionUser()
>    File 
> "/usr/lib/python2.4/site-packages/cds_indico-0.97_rc1-py2.4.egg/MaKaC/webinterface/rh/base.py", 
> line 224, in _setSessionUser
>      self._aw.setUser( self._getSession().getUser() )
>    File 
> "/usr/lib/python2.4/site-packages/ZODB3-3.8.5-py2.4-linux-x86_64.egg/ZODB/Connection.py", 
> line 815, in setstate
>      self._setstate(obj)
>    File 
> "/usr/lib/python2.4/site-packages/ZODB3-3.8.5-py2.4-linux-x86_64.egg/ZODB/Connection.py", 
> line 856, in _setstate
>      p, serial = self._storage.load(obj._p_oid, self._version)
>    File 
> "/usr/lib/python2.4/site-packages/ZODB3-3.8.5-py2.4-linux-x86_64.egg/ZEO/ClientStorage.py", 
> line 712, in load
>      return self.loadEx(oid, version)[:2]
>    File 
> "/usr/lib/python2.4/site-packages/ZODB3-3.8.5-py2.4-linux-x86_64.egg/ZEO/ClientStorage.py", 
> line 735, in loadEx
>      data, tid, ver = self._server.loadEx(oid, version)
>    File 
> "/usr/lib/python2.4/site-packages/ZODB3-3.8.5-py2.4-linux-x86_64.egg/ZEO/ServerStub.py", 
> line 196, in loadEx
>      return self.rpc.call("loadEx", oid, version)
>    File 
> "/usr/lib/python2.4/site-packages/ZODB3-3.8.5-py2.4-linux-x86_64.egg/ZEO/zrpc/connection.py", 
> line 699, in call
>      raise inst # error raised by server
> POSKeyError: 0x336b08e2
> """
> 
> I read somewhere that this could mean our FileStorage is corrupted, but 
> I find it strange that it only happens occasionally.
> Any clue on what can be causing this?
>

http://www.zopyx.de/blog/checking-your-zodb-storages-for-poskey-errors

- -aj
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