[ZCM] [ZC] 2038/ 5 Comment "AttributeError: 'NoneType' object has no attribute 'setLastTid'"

[Collector: Zope Bugs, Features, and Patches ...]

Issue #2038 Update (Comment) "AttributeError: 'NoneType' object has no attribute 'setLastTid'"
 Status Pending, Database/bug medium
To followup, visit:
  http://www.zope.org/Collectors/Zope/2038

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= Comment - Entry #5 by efge on Apr 3, 2006 10:29 am

These are different tracebacks, please post them in different Issues.

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= Comment - Entry #4 by chrb on Mar 9, 2006 12:05 pm

Another traceback... probably related?

ERROR:ZEO.zNone(22387) CW: error in notifyConnected (('localhost', 12345))  None                                                           Traceback (most recent call last):
                                                                                                             File "/usr/lib/python2.4/site-packages/ZEO/zrpc/client.py", line 506, in notify_client
                                            self.client.notifyConnected(self.conn)
                                                                                    File "/usr/lib/python2.4/site-packages/ZEO/ClientStorage.py", line 521, in notifyConnected
 sel82verify_cache(stub)
 File "/usr/lib/python2.4/site-packages/ZEO/ClientStorage.py", line 589, in verify_cache
                                                                                                                                           self.invalidateTransaction(*pair)
 File "/usr/lib/python2.4/site-packages/ZEO/ClientStorage.py", line 1114, in invalidateTransaction
                                                                                                                        self._cache.setLastTid(tid)
                                                                                                                                                     File "/usr/lib/python2.4/site-packages/ZEO/cache.py", line 151, in setLastTid
                                                                           self.fc.settid(tid)
                                                                                                File "/usr/lib/python2.4/site-packages/ZEO/cache.py", line 1060, in settid
raise ValueError("new last tid (%s) must be greater than "
                                                                             ValueError: new last tid (244314487217783193) must be greater than previous one (244314487217783193)

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= Comment - Entry #3 by chrb on Mar 6, 2006 11:37 am

Another similar traceback:

ERROR:ZEO.zrpc.Connection(C):(localhost:12345) Asynchronous call raised exception: <ManagedClientConnection ('127.0.0.1', 12345)>
                                                                                                                                Traceback (most recent call last):  
         File "/usr/lib/python2.4/site-packages/ZEO/zrpc/connection.py", line 421, in handle_request
                                                                                                        ret = meth(*args)  
                                                                                                                           File "/usr/lib/python2.4/site-packages/ZEO/ClientStorage.py", line 1114, in invalidateTransaction
                                                                     self._cache.setLastTid(tid)  
                                                                                                  File "/usr/lib/python2.4/site-packages/ZEO/cache.py", line 151, in setLastTid
 self.fc.settid(tid)    File /usr/lib/python2.4/site-packages/ZEO/cache.py", line 1065, in settid
                                                                                                                           self.f.seek(len(magic))
                                                                                                                                                  IOError: [Errno 9] Bad file descriptor
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= Edit - Entry #2 by shh on Mar 6, 2006 10:37 am

 Changes: submitter email, revised title
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= Request - Entry #1 by chrb on Mar 5, 2006 3:29 pm

With zodb-3.6.0 I occasionally see the error:

ERROR:ZEO.zrpc.Connection(C):(localhost:12345)
Asynchronous call raised exception: <ManagedClientConnection
('127.0.0.1', 12345)>
Traceback (most recent call last):
File "/usr/lib/python2.4/site-packages/ZEO/zrpc/connection.py", line
421, in handle_request

                                ret = meth(*args)

                                                   File
"/usr/lib/python2.4/site-packages/ZEO/ClientStorage.py", line 1114, in
invalidateTransaction

self._cache.setLastTid(tid)

                        AttributeError: 'NoneType' object has no
attribute 'setLastTid'

I'm just connecting to the zeo server and then starting the asyncore
loop thread. Maybe there is some race condition there?
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