Re: [ZODB-Dev] ZEO tests hanging in Python2.5
On Jun 16, 2007, at 3:20 PM, Jim Fulton wrote: Tim, That's an awesome clue. Thanks! Now, on a development branch, I have no test hangs! (I have a few failures to look at, but, hopefully, those will be easier to deal with than hangs.) Jim -- Jim Fulton mailto:[EMAIL PROTECTED]Python Powered! CTO (540) 361-1714 http://www.python.org Zope Corporationhttp://www.zope.com http://www.zope.org ___ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev
Re: [ZODB-Dev] ZEO tests hanging in Python2.5
Tim, That's an awesome clue. Thanks! Jim On Jun 16, 2007, at 3:05 PM, Tim Peters wrote: [Nikhil <[EMAIL PROTECTED]>] Testing of ZEO is hanging in Python2.5. When i traced i think it is failing to connect and is attempting to reconnect continously in client.py. Does this happen due to changes in socket module or due to in threading module ? FWIW, when I looked at this about a year ago, the immediate cause was that Python 2.5 changed exceptions from old-style classes to new-style classes. As a result, a bit of low-level code in ZEO's lowest-level communication layer wasn't recognizing exceptions correctly. Don't know whether that's still the case. IIRC, it's at least part of the problem if the find_global() function in ZEO/zrpc/marshal.py still contains this block: # TODO: is there a better way to do this? if type(r) == types.ClassType and issubclass(r, Exception): return r types.ClassType is the type of an old-style class: class C: pass # old-style class type(C) class C(object): pass # new-style class type(C) 2.4: type(Exception) 2.5: type(Exception) Of course it would be wise to review all uses of types.ClassType in ZODB. ___ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev -- Jim Fulton mailto:[EMAIL PROTECTED]Python Powered! CTO (540) 361-1714 http://www.python.org Zope Corporationhttp://www.zope.com http://www.zope.org ___ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev
Re: [ZODB-Dev] ZEO tests hanging in Python2.5
[Nikhil <[EMAIL PROTECTED]>] Testing of ZEO is hanging in Python2.5. When i traced i think it is failing to connect and is attempting to reconnect continously in client.py. Does this happen due to changes in socket module or due to in threading module ? FWIW, when I looked at this about a year ago, the immediate cause was that Python 2.5 changed exceptions from old-style classes to new-style classes. As a result, a bit of low-level code in ZEO's lowest-level communication layer wasn't recognizing exceptions correctly. Don't know whether that's still the case. IIRC, it's at least part of the problem if the find_global() function in ZEO/zrpc/marshal.py still contains this block: # TODO: is there a better way to do this? if type(r) == types.ClassType and issubclass(r, Exception): return r types.ClassType is the type of an old-style class: class C: pass # old-style class type(C) class C(object): pass # new-style class type(C) 2.4: type(Exception) 2.5: type(Exception) Of course it would be wise to review all uses of types.ClassType in ZODB. ___ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev
Re: [ZODB-Dev] ZEO tests hanging in Python2.5
On Jun 16, 2007, at 2:34 PM, Nikhil wrote: Hello, Testing of ZEO is hanging in Python2.5. When i traced i think it is failing to connect and is attempting to reconnect continously in client.py. Does this happen due to changes in socket module or due to in threading module ? No one has yet taken the time to debug it yet, so we don't know. Jim -- Jim Fulton mailto:[EMAIL PROTECTED]Python Powered! CTO (540) 361-1714 http://www.python.org Zope Corporationhttp://www.zope.com http://www.zope.org ___ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev
