[Zope] Re: Florent Guillaume's database Conflict Error on session objects patch not working ?
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 yacine chaouche wrote: Hi all, As discussed here : http://mail.zope.org/pipermail/zope/2007-January/170151.html and continued here : http://mail.zope.org/pipermail/zope/2007-January/170156.html I am experiencing issues regarding a database ConflictError on session objects. I use zope 2.9.0 python 2.4.2, and the code of the MultiDB support has been patched (as suggested by Florent Guillaume) http://mail.zope.org/pipermail/zodb-dev/2006-January/009737.html My main concern is to debug my application where, on every couple of requests coming from two different browsers at the same time (before the first request is , one of them wins and the other always fails and raises a conflict error. It is not a ReadConflictError, nor a WriteConflictError. It is a ConflictError: database conflict error. I am aware that conflicts occure up to 20% of the time, but in my case it is almost 100% in this specific situation ! If I do not use the session object in my code, I have no errors at all and everything just goes fine. Any idea on how to debug this ? Florent, maybe ? someone help me ! I am stuck on this for 2 weeks now. NOTE : I do not use Zeo, nor frames. You might try 'faster', an alternative ZODB-based sessioning implementation: one of its goals is to reduce the chance of collisions compared to the stock implementation: http://agendaless.com/Members/tseaver/software/faster/ Tres. - -- === Tres Seaver +1 540-429-0999 [EMAIL PROTECTED] Palladion Software Excellence by Designhttp://palladion.com -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.2.2 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFFw0aj+gerLs4ltQ4RAuDLAJ9VXpLtmnr5EwYMV1AkS1Gxa0lvmwCgoGIv hkn26PUMSmmBKO8nDYFdmkU= =n+Qz -END PGP SIGNATURE- ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] Re: Florent Guillaume's database Conflict Error on session objects patch not working ?
I forward your message to the list. I installed faster : 1) It has no INSTALL file 2) I created a better session manager object under the id newSession, and hit the test button. I Got this error : Traceback (most recent call last): File /opt/aef/Zope-2.9.0/lib/python/ZPublisher/Publish.py, line 113, in publish request, bind=1) File /opt/aef/Zope-2.9.0//lib/python/ZPublisher/mapply.py, line 88, in mapply if debug is not None: return debug(object,args,context) File /opt/aef/Zope-2.9.0/lib/python/ZPublisher/Publish.py, line 40, in call_object result=apply(object,args) # Type scr to step into published object. File /opt/aef/Zope-2.9.0//lib/python/Shared/DC/Scripts/Bindings.py, line 311, in __call__ return self._bindAndExec(args, kw, None) File /opt/aef/Zope-2.9.0//lib/python/Shared/DC/Scripts/Bindings.py, line 329, in _bindAndExec def _bindAndExec(self, args, kw, caller_namespace): File /opt/aef/Zope-2.9.0//lib/python/Shared/DC/Scripts/Bindings.py, line 348, in _bindAndExec return self._exec(bound_data, args, kw) File /opt/aef/Zope-2.9.0//lib/python/Products/PageTemplates/PageTemplateFile.py, line 110, in _exec return self.pt_render(extra_context=bound_names) File /opt/aef/Zope-2.9.0//lib/python/Products/PageTemplates/PageTemplate.py, line 104, in pt_render tal=not source, strictinsert=0)() File /opt/aef/Zope-2.9.0//lib/python/TAL/TALInterpreter.py, line 234, in __call__ def __call__(self): File /opt/aef/Zope-2.9.0//lib/python/TAL/TALInterpreter.py, line 238, in __call__ self.interpret(self.program) File /opt/aef/Zope-2.9.0//lib/python/TAL/TALInterpreter.py, line 281, in interpret handlers[opcode](self, args) File /opt/aef/Zope-2.9.0//lib/python/TAL/TALInterpreter.py, line 507, in do_setLocal_tal self.engine.setLocal(name, self.engine.evaluateValue(expr)) File /opt/aef/Zope-2.9.0//lib/python/Products/PageTemplates/TALES.py, line 221, in evaluate return expression(self) File /opt/aef/Zope-2.9.0//lib/python/Products/PageTemplates/Expressions.py, line 182, in __call__ def __call__(self, econtext): File /opt/aef/Zope-2.9.0//lib/python/Products/PageTemplates/Expressions.py, line 185, in __call__ return self._eval(econtext) File /opt/aef/Zope-2.9.0//lib/python/Products/PageTemplates/Expressions.py, line 180, in _eval return render(ob, econtext.vars) File /opt/aef/Zope-2.9.0//lib/python/Products/PageTemplates/Expressions.py, line 88, in render raise File /opt/aef/Zope-2.9.0//lib/python/Products/PageTemplates/Expressions.py, line 85, in render ob = ob() File /opt/aef/Zope-2.9.0/lib/python/Products/faster/sessiondata.py, line 255, in addItemsToSession before = len(session) AttributeError: __len__ Do you use a bug reporting system or something for your product ? Thank you, Y.Chaouche 2007/2/2, Tres Seaver [EMAIL PROTECTED]: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 yacine chaouche wrote: Hi all, As discussed here : http://mail.zope.org/pipermail/zope/2007-January/170151.html and continued here : http://mail.zope.org/pipermail/zope/2007-January/170156.html I am experiencing issues regarding a database ConflictError on session objects. I use zope 2.9.0 python 2.4.2, and the code of the MultiDB support has been patched (as suggested by Florent Guillaume) http://mail.zope.org/pipermail/zodb-dev/2006-January/009737.html My main concern is to debug my application where, on every couple of requests coming from two different browsers at the same time (before the first request is , one of them wins and the other always fails and raises a conflict error. It is not a ReadConflictError, nor a WriteConflictError. It is a ConflictError: database conflict error. I am aware that conflicts occure up to 20% of the time, but in my case it is almost 100% in this specific situation ! If I do not use the session object in my code, I have no errors at all and everything just goes fine. Any idea on how to debug this ? Florent, maybe ? someone help me ! I am stuck on this for 2 weeks now. NOTE : I do not use Zeo, nor frames. You might try 'faster', an alternative ZODB-based sessioning implementation: one of its goals is to reduce the chance of collisions compared to the stock implementation: http://agendaless.com/Members/tseaver/software/faster/ Tres. - -- === Tres Seaver +1 540-429-0999 [EMAIL PROTECTED] Palladion Software Excellence by Designhttp://palladion.com -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.2.2 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFFw0aj+gerLs4ltQ4RAuDLAJ9VXpLtmnr5EwYMV1AkS1Gxa0lvmwCgoGIv hkn26PUMSmmBKO8nDYFdmkU= =n+Qz -END PGP SIGNATURE- ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists -
[Zope] Re: Florent Guillaume's database Conflict Error on session objects patch not working ?
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 yacine chaouche wrote: I forward your message to the list. I installed faster : 1) It has no INSTALL file You're correct. It installs like other Zope2 products, but it could use some description of how to replace the stock session manager with the new one. 2) I created a better session manager object under the id newSession, and hit the test button. I Got this error : Assuming that you mean the Add button on the Test tab, I can't reproduce this in my Zopd 2.9-based sandbox (running on the head of the 2.9 branch). The items get added to the list (assuming that the key is separated from the value on the same line with a space. Traceback (most recent call last): File /opt/aef/Zope-2.9.0/lib/python/ZPublisher/Publish.py, line 113, in publish request, bind=1) File /opt/aef/Zope-2.9.0//lib/python/ZPublisher/mapply.py, line 88, in mapply if debug is not None: return debug(object,args,context) File /opt/aef/Zope-2.9.0/lib/python/ZPublisher/Publish.py, line 40, in call_object result=apply(object,args) # Type scr to step into published object. File /opt/aef/Zope-2.9.0//lib/python/Shared/DC/Scripts/Bindings.py, line 311, in __call__ return self._bindAndExec(args, kw, None) File /opt/aef/Zope-2.9.0//lib/python/Shared/DC/Scripts/Bindings.py, line 329, in _bindAndExec def _bindAndExec(self, args, kw, caller_namespace): File /opt/aef/Zope-2.9.0//lib/python/Shared/DC/Scripts/Bindings.py, line 348, in _bindAndExec return self._exec(bound_data, args, kw) File /opt/aef/Zope-2.9.0//lib/python/Products/PageTemplates/PageTemplateFile.py, line 110, in _exec return self.pt_render(extra_context=bound_names) File /opt/aef/Zope-2.9.0//lib/python/Products/PageTemplates/PageTemplate.py, line 104, in pt_render tal=not source, strictinsert=0)() File /opt/aef/Zope-2.9.0//lib/python/TAL/TALInterpreter.py, line 234, in __call__ def __call__(self): File /opt/aef/Zope-2.9.0//lib/python/TAL/TALInterpreter.py, line 238, in __call__ self.interpret(self.program) File /opt/aef/Zope-2.9.0//lib/python/TAL/TALInterpreter.py, line 281, in interpret handlers[opcode](self, args) File /opt/aef/Zope-2.9.0//lib/python/TAL/TALInterpreter.py, line 507, in do_setLocal_tal self.engine.setLocal(name, self.engine.evaluateValue(expr)) File /opt/aef/Zope-2.9.0//lib/python/Products/PageTemplates/TALES.py, line 221, in evaluate return expression(self) File /opt/aef/Zope-2.9.0//lib/python/Products/PageTemplates/Expressions.py, line 182, in __call__ def __call__(self, econtext): File /opt/aef/Zope-2.9.0//lib/python/Products/PageTemplates/Expressions.py, line 185, in __call__ return self._eval(econtext) File /opt/aef/Zope-2.9.0//lib/python/Products/PageTemplates/Expressions.py, line 180, in _eval return render(ob, econtext.vars) File /opt/aef/Zope-2.9.0//lib/python/Products/PageTemplates/Expressions.py, line 88, in render raise File /opt/aef/Zope-2.9.0//lib/python/Products/PageTemplates/Expressions.py, line 85, in render ob = ob() File /opt/aef/Zope-2.9.0/lib/python/Products/faster/sessiondata.py, line 255, in addItemsToSession before = len(session) AttributeError: __len__ Do you use a bug reporting system or something for your product ? Yes, there is a collector linked of the product's homepage. http://agendaless.com/Members/tseaver/software/faster/ I would note that we have had the product deployed in production for two customers for six months now, without any issues at all. Tres. - -- === Tres Seaver +1 540-429-0999 [EMAIL PROTECTED] Palladion Software Excellence by Designhttp://palladion.com -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.2.2 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFFw2qz+gerLs4ltQ4RAn4nAJ9I5kHhVtcdHHjLKQhiPpZH0/YyJwCdFrV1 X5aHzRbZHQVi1lGLH/Hkpsw= =ufay -END PGP SIGNATURE- ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] Re: Florent Guillaume's database Conflict Error on session objects patch not working ?
I added a new faster session object in my root folder. Once it was created, i was on the property manager form and clicked on the test tab and got the error reported above. Is the request[SESSION] object that you use in your code addressing the classic SESSION object (in temp_folder/session_data_container) or does it address your new session data objects ? for the latter case, maybe i should rename the classic (zope's) SESSION object to SESSION2 or something... Y.Chaouche 2007/2/2, Tres Seaver [EMAIL PROTECTED]: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 yacine chaouche wrote: I forward your message to the list. I installed faster : 1) It has no INSTALL file You're correct. It installs like other Zope2 products, but it could use some description of how to replace the stock session manager with the new one. 2) I created a better session manager object under the id newSession, and hit the test button. I Got this error : Assuming that you mean the Add button on the Test tab, I can't reproduce this in my Zopd 2.9-based sandbox (running on the head of the 2.9 branch). The items get added to the list (assuming that the key is separated from the value on the same line with a space. Traceback (most recent call last): File /opt/aef/Zope-2.9.0/lib/python/ZPublisher/Publish.py, line 113, in publish request, bind=1) File /opt/aef/Zope-2.9.0//lib/python/ZPublisher/mapply.py, line 88, in mapply if debug is not None: return debug(object,args,context) File /opt/aef/Zope-2.9.0/lib/python/ZPublisher/Publish.py, line 40, in call_object result=apply(object,args) # Type scr to step into published object. File /opt/aef/Zope-2.9.0//lib/python/Shared/DC/Scripts/Bindings.py, line 311, in __call__ return self._bindAndExec(args, kw, None) File /opt/aef/Zope-2.9.0//lib/python/Shared/DC/Scripts/Bindings.py, line 329, in _bindAndExec def _bindAndExec(self, args, kw, caller_namespace): File /opt/aef/Zope-2.9.0//lib/python/Shared/DC/Scripts/Bindings.py, line 348, in _bindAndExec return self._exec(bound_data, args, kw) File /opt/aef/Zope-2.9.0//lib/python/Products/PageTemplates/PageTemplateFile.py, line 110, in _exec return self.pt_render(extra_context=bound_names) File /opt/aef/Zope-2.9.0//lib/python/Products/PageTemplates/PageTemplate.py, line 104, in pt_render tal=not source, strictinsert=0)() File /opt/aef/Zope-2.9.0//lib/python/TAL/TALInterpreter.py, line 234, in __call__ def __call__(self): File /opt/aef/Zope-2.9.0//lib/python/TAL/TALInterpreter.py, line 238, in __call__ self.interpret(self.program) File /opt/aef/Zope-2.9.0//lib/python/TAL/TALInterpreter.py, line 281, in interpret handlers[opcode](self, args) File /opt/aef/Zope-2.9.0//lib/python/TAL/TALInterpreter.py, line 507, in do_setLocal_tal self.engine.setLocal(name, self.engine.evaluateValue(expr)) File /opt/aef/Zope-2.9.0//lib/python/Products/PageTemplates/TALES.py, line 221, in evaluate return expression(self) File /opt/aef/Zope-2.9.0//lib/python/Products/PageTemplates/Expressions.py, line 182, in __call__ def __call__(self, econtext): File /opt/aef/Zope-2.9.0//lib/python/Products/PageTemplates/Expressions.py, line 185, in __call__ return self._eval(econtext) File /opt/aef/Zope-2.9.0//lib/python/Products/PageTemplates/Expressions.py, line 180, in _eval return render(ob, econtext.vars) File /opt/aef/Zope-2.9.0//lib/python/Products/PageTemplates/Expressions.py, line 88, in render raise File /opt/aef/Zope-2.9.0//lib/python/Products/PageTemplates/Expressions.py, line 85, in render ob = ob() File /opt/aef/Zope-2.9.0/lib/python/Products/faster/sessiondata.py, line 255, in addItemsToSession before = len(session) AttributeError: __len__ Do you use a bug reporting system or something for your product ? Yes, there is a collector linked of the product's homepage. http://agendaless.com/Members/tseaver/software/faster/ I would note that we have had the product deployed in production for two customers for six months now, without any issues at all. Tres. - -- === Tres Seaver +1 540-429-0999 [EMAIL PROTECTED] Palladion Software Excellence by Designhttp://palladion.com -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.2.2 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFFw2qz+gerLs4ltQ4RAn4nAJ9I5kHhVtcdHHjLKQhiPpZH0/YyJwCdFrV1 X5aHzRbZHQVi1lGLH/Hkpsw= =ufay -END PGP SIGNATURE- ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Re: Florent Guillaume's database Conflict Error on session objects patch not working ?
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 2 Feb 2007, at 17:45, Tres Seaver wrote: I installed faster : 1) It has no INSTALL file You're correct. It installs like other Zope2 products, but it could use some description of how to replace the stock session manager with the new one. There is a INSTALL.txt on the CVS HEAD, which I put there a while ago. jens -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.5 (Darwin) iD8DBQFFw3GQRAx5nvEhZLIRAlKaAJ9coVr4xAlj2UF2h5Rd3dAcF7RYpwCfbo9r gvK73yvVkZgOUFU/4QV1ehU= =BpQY -END PGP SIGNATURE- ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
