Re: Connection problem with ZEO 5.1

On Mon, Feb 5, 2018 at 6:51 AM, Thierry Florac <[email protected]> wrote:

> Problem solved!
> The exception was raised when using a "wait=False" argument!
> I replaced it with the "wait_timeout" argument and everything is OK...
>

Ah. The wait argument is more of a trap than anything else, although it's
useful for some tests.

Jim



>
> Regards,
> Thierry
>
> 2018-02-05 9:17 GMT+01:00 Thierry Florac <[email protected]>:
>
>> Hi !
>>
>> I migrated recently a ZEO server from ZEO 4.2/ZODB 4.4 to ZEO 5.1/ZODB
>> 5.3.
>> I created a tasks scheduler which is used to pack the ZEO database. This
>> code that was previously working now raises an exception:
>>
>> Traceback (most recent call last):
>>>   File "/var/local/eggs/ZEO-5.1.1-py3.5.egg/ZEO/asyncio/client.py",
>>> line 743, in call
>>>     return self.wait_for_result(result, timeout)
>>>   File "/var/local/eggs/ZEO-5.1.1-py3.5.egg/ZEO/asyncio/client.py",
>>> line 756, in wait_for_result
>>>     return future.result(timeout)
>>>   File "/usr/lib/python3.5/concurrent/futures/_base.py", line 405, in
>>> result
>>>     return self.__get_result()
>>>   File "/usr/lib/python3.5/concurrent/futures/_base.py", line 357, in
>>> __get_result
>>>     raise self._exception
>>> ZEO.Exceptions.ClientDisconnected
>>> During handling of the above exception, another exception occurred:
>>> Traceback (most recent call last):
>>>   File "/var/local/eggs/pyams_scheduler-0.1.8-py3.5.egg/pyams_scheduler/task.py",
>>> line 267, in _run
>>>     task.run(report)
>>>   File "/var/local/eggs/pyams_scheduler-0.1.8-py3.5.egg/pyams_scheduler/zodb.py",
>>> line 46, in run
>>>     storage, db = zeo_connection.get_connection(get_storage=True)
>>>   File "/var/local/eggs/pyams_utils-0.1.11-py3.5.egg/pyams_utils/zodb.py",
>>> line 163, in get_connection
>>>     db = DB(storage)
>>>   File "/var/local/eggs/ZODB-5.3.0-py3.5.egg/ZODB/DB.py", line 488, in
>>> __init__
>>>     conn.get(z64)
>>>   File "/var/local/eggs/ZODB-5.3.0-py3.5.egg/ZODB/Connection.py", line
>>> 247, in get
>>>     p, _ = self._storage.load(oid)
>>>   File "/var/local/eggs/ZODB-5.3.0-py3.5.egg/ZODB/mvccadapter.py", line
>>> 143, in load
>>>     r = self._storage.loadBefore(oid, self._start)
>>>   File "/var/local/eggs/ZEO-5.1.1-py3.5.egg/ZEO/ClientStorage.py", line
>>> 522, in loadBefore
>>>     return self._server.load_before(oid, tid)
>>>   File "/var/local/eggs/ZEO-5.1.1-py3.5.egg/ZEO/asyncio/client.py",
>>> line 783, in load_before
>>>     return self.__call(self.client.load_before_threadsafe, oid, tid)
>>>   File "/var/local/eggs/ZEO-5.1.1-py3.5.egg/ZEO/asyncio/client.py",
>>> line 748, in call
>>>     return self.wait_for_result(result, self.timeout)
>>>   File "/var/local/eggs/ZEO-5.1.1-py3.5.egg/ZEO/asyncio/client.py",
>>> line 756, in wait_for_result
>>>     return future.result(timeout)
>>>   File "/usr/lib/python3.5/concurrent/futures/_base.py", line 405, in
>>> result
>>>     return self.__get_result()
>>>   File "/usr/lib/python3.5/concurrent/futures/_base.py", line 357, in
>>> __get_result
>>>     raise self._exception
>>> ZEO.Exceptions.ClientDisconnected: never connected
>>
>>
>> Any idea?
>>
>> Best regards,
>> Thierry
>> --
>> http://www.imagesdusport.com -- http://www.ztfy.org
>>
>
>
>
> --
> http://www.imagesdusport.com -- http://www.ztfy.org
>
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-- 
Jim Fulton
http://jimfulton.info

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