Re: strange exception

one more exception is coming in similar setup

 transactionManager.commit()
  File 
"C:\Python27\lib\site-packages\transaction-1.6.1-py2.7.egg\transaction\_manager.py"
, line 123, in commit
    return self.get().commit()
  File 
"C:\Python27\lib\site-packages\transaction-1.6.1-py2.7.egg\transaction\_transaction.py"
, line 280, in commit
    reraise(t, v, tb)
  File 
"C:\Python27\lib\site-packages\transaction-1.6.1-py2.7.egg\transaction\_transaction.py"
, line 271, in commit
    self._commitResources()
  File 
"C:\Python27\lib\site-packages\transaction-1.6.1-py2.7.egg\transaction\_transaction.py"
, line 416, in _commitResources
    reraise(t, v, tb)
  File 
"C:\Python27\lib\site-packages\transaction-1.6.1-py2.7.egg\transaction\_transaction.py"
, line 398, in _commitResources
    rm.tpc_finish(self)
  File 
"C:\Python27\lib\site-packages\zodb-4.4.3-py2.7.egg\ZODB\Connection.py", 
line 817, in tpc_finish
    serial = self._storage.tpc_finish(transaction, callback)
  File 
"C:\Python27\lib\site-packages\zeo-4.3.0-py2.7.egg\ZEO\ClientStorage.py", 
line 1163, in tpc_finish
    self._update_cache(tid)
  File 
"C:\Python27\lib\site-packages\zeo-4.3.0-py2.7.egg\ZEO\ClientStorage.py", 
line 1222, in _update_cache
    target_blob_file_name,
  File "C:\Python27\lib\site-packages\zodb-4.4.3-py2.7.egg\ZODB\blob.py", 
line 921, in rename_or_copy_blob
    remove_committed(f1)
  File "C:\Python27\lib\site-packages\zodb-4.4.3-py2.7.egg\ZODB\blob.py", 
line 931, in remove_committed
    os.remove(filename)
WindowsError: [Error 32] The process cannot access the file because it is 
being used by another process: u
'D:\\sites\\sites_7_0_scale\\batonSites\\CheckerServer\\var\\blobs\\124\\0x00cdvcft.tmp-'
------


On Thursday, 22 December 2016 14:55:29 UTC+5:30, Sanjay Rao wrote:
>
> Does anyone has any idea that in what conditions this exception can occur ?
>
>   File "C:\Python27\lib\site-packages\zope\app\component\hooks.py", line 
> 89, in getSiteManager
>     context, zope.component.getGlobalSiteManager())
>   File "C:\Python27\lib\site-packages\zope\app\component\hooks.py", line 
> 95, in adapter_hook
>     return siteinfo.adapter_hook(interface, object, name, default)
>   File "C:\Python27\lib\site-packages\zope\app\component\site.py", line 
> 407, in SiteManagerAdapter
>     current = getattr(current, '__parent__', None)
>   File 
> "C:\Python27\lib\site-packages\zodb-4.4.3-py2.7.egg\ZODB\Connection.py", 
> line 899, in setstate
>     self._setstate(obj, oid)
>   File 
> "C:\Python27\lib\site-packages\zodb-4.4.3-py2.7.egg\ZODB\Connection.py", 
> line 943, in _setstate
>     p, serial = self._storage.load(oid, '')
>   File 
> "C:\Python27\lib\site-packages\zeo-4.3.0-py2.7.egg\ZEO\ClientStorage.py", 
> line 825, in load
>     result = self.loadBefore(oid, m64)
>   File 
> "C:\Python27\lib\site-packages\zeo-4.3.0-py2.7.egg\ZEO\ClientStorage.py", 
> line 851, in loadBefore
>     self._cache.store(oid, tid, end, data)
>   File "C:\Python27\lib\site-packages\zeo-4.3.0-py2.7.egg\ZEO\cache.py", 
> line 139, in _locked_wrapper
>     return func(inst, *args, **kwargs)
>   File "C:\Python27\lib\site-packages\zeo-4.3.0-py2.7.egg\ZEO\cache.py", 
> line 647, in store
>     self._store(oid, start_tid, end_tid, data, size)
>   File "C:\Python27\lib\site-packages\zeo-4.3.0-py2.7.egg\ZEO\cache.py", 
> line 661, in _store
>     nfreebytes = self._makeroom(size+1)
>   File "C:\Python27\lib\site-packages\zeo-4.3.0-py2.7.egg\ZEO\cache.py", 
> line 447, in _makeroom
>     del current[oid]
>   File 
> "C:\Python27\lib\site-packages\zodb-4.4.3-py2.7.egg\ZODB\fsIndex.py", 
> line 167, in __delitem__
>     del tree[key[6:]]
> KeyError: '_\t'
>
>

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