[ZCM] [ZC] 1401/ 7 Comment "SystemError in SessionDataManager"

Tue Aug 3 12:30:28 EDT 2004

Issue #1401 Update (Comment) "SystemError in SessionDataManager"
 Status Deferred, Zope/bug critical
To followup, visit:
  http://zope.org/Collectors/Zope/1401

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= Comment - Entry #7 by mcdonc on Aug 3, 2004 12:30 pm

Thanks for the report(s).

I have heard from four people, all of whom use Plone, that they have this problem.  I haven't been able to replicate it, but I also haven't used Plone in a while.  FWIW, no non-Plone users have reported this error.

The SystemError itself is indicative of a bad piece of C code somewhere (although it's not clear where).

The way this will get fixed is for someone to outline a repeatable set of configuration and usage steps for the systemerror to be reproduced, and then research the cause of the systemerror (maybe using gdb).  I may be able to do this, but it likely won't be soon due to other committments, so help is appreciated in the meantime.
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= Comment - Entry #6 by hrma on Aug 3, 2004 10:58 am

I couldn't attach my event log (Insufficient Privs) so I placed it in my folder.  It can be found here:

http://zope.org/Members/hrma/event.zip

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= Comment - Entry #5 by hrma on Aug 3, 2004 10:46 am

Hey folks...  I'm having the same issue after upgrading to Zope 2.7.2.  I'm running Python 2.3.3, Zope 2.7.2, Plone 2.0.3 frontended by Apache2 on a Windows 2000 server.  There are 2 zope instances running on this server.  I seem to be having this problem (so far) with only one of them.  Here's the traceback I'm getting:

Traceback (innermost last):
  Module ZPublisher.Publish, line 101, in publish
  Module ZPublisher.mapply, line 88, in mapply
  Module ZPublisher.Publish, line 39, in call_object
  Module Products.CMFCore.PortalContent, line 116, in __call__
  Module Shared.DC.Scripts.Bindings, line 306, in __call__
  Module Shared.DC.Scripts.Bindings, line 343, in _bindAndExec
  Module Products.CMFCore.FSPageTemplate, line 191, in _exec
  Module Products.CMFCore.FSPageTemplate, line 124, in pt_render
  Module Products.PageTemplates.PageTemplate, line 96, in pt_render
   - <FSPageTemplate at /www_hrma_org/document_view used for /www_hrma_org/index_html>
  Module TAL.TALInterpreter, line 189, in __call__
  Module TAL.TALInterpreter, line 233, in interpret
  Module TAL.TALInterpreter, line 670, in do_useMacro
  Module TAL.TALInterpreter, line 233, in interpret
  Module TAL.TALInterpreter, line 408, in do_optTag_tal
  Module TAL.TALInterpreter, line 393, in do_optTag
  Module TAL.TALInterpreter, line 388, in no_tag
  Module TAL.TALInterpreter, line 233, in interpret
  Module TAL.TALInterpreter, line 636, in do_condition
  Module TAL.TALInterpreter, line 233, in interpret
  Module TAL.TALInterpreter, line 559, in do_insertTranslation
  Module TAL.TALInterpreter, line 622, in translate
  Module Products.PageTemplates.TALES, line 264, in translate
  Module Products.PlacelessTranslationService.PlacelessTranslationService, line 113, in translate
  Module Products.PlacelessTranslationService.PlacelessTranslationService, line 504, in translate
  Module Products.PlacelessTranslationService.PlacelessTranslationService, line 416, in getCatalogsForTranslation
  Module Products.PlacelessTranslationService.PlacelessTranslationService, line 541, in negotiate_language
  Module Products.PlacelessTranslationService.Negotiator, line 261, in negotiate
  Module Products.PlacelessTranslationService.Negotiator, line 266, in _negotiate
  Module Products.PlacelessTranslationService.Negotiator, line 54, in getLangPrefs
  Module Products.PlacelessTranslationService.Negotiator, line 172, in getAccepted
  Module ZPublisher.HTTPRequest, line 1218, in __getattr__
  Module ZPublisher.HTTPRequest, line 1178, in get
  Module Products.Sessions.SessionDataManager, line 94, in getSessionData
  Module Products.Sessions.SessionDataManager, line 183, in _getSessionDataObject
SystemError: error return without exception set

I am also seeing ZODB conflict errors in the event log.  I get KeyErrors all over the place, and when I try to access the Session Data container within /temp_folder I get:

Traceback (innermost last):
  Module ZPublisher.Publish, line 101, in publish
  Module ZPublisher.mapply, line 88, in mapply
  Module ZPublisher.Publish, line 39, in call_object
  Module App.special_dtml, line 62, in __call__
  Module DocumentTemplate.DT_String, line 474, in __call__
  Module Products.Transience.Transience, line 838, in nudge
  Module Products.Transience.Transience, line 694, in _gc
KeyError: 1091222580

I've attached a zipped snapshot of my event log detailing the numerous errors since my last instance startup on the 29th.

I hope all this is A) related and B) helps.  Let me know if I can be of any assistance.

Mick Drevyanko
mick at portofhamptonroads.com
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= Defer - Entry #4 by chrisw on Jul 30, 2004 9:46 am

 Status: Pending => Deferred

If this can't be reproduced within a month, it'll get rejected as something specific to your setup.
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= Comment - Entry #3 by morphex on Jul 21, 2004 6:19 am

Not sure if it can be reproduced, I'll try to create a test that reproduces the bug this week
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= Comment - Entry #2 by ajung on Jul 20, 2004 12:35 am

Can this error be reproduced somehow?
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= Request - Entry #1 by morphex on Jul 3, 2004 10:03 am

2004-07-03T09:00:04 ERROR(200) SiteError http://www.blogologue.com/index_html
Traceback (most recent call last):
  File "/home/shared/zope271/lib/python/ZPublisher/Publish.py", line 101, in publish
    request, bind=1)
  File "/home/shared/zope271/lib/python/ZPublisher/mapply.py", line 88, in mapply
    if debug is not None: return debug(object,args,context)
  File "/home/shared/zope271/lib/python/ZPublisher/Publish.py", line 39, in call_object
    result=apply(object,args) # Type s<cr> to step into published object.
  File "/home/shared/zope271/lib/python/Shared/DC/Scripts/Bindings.py", line 306, in __call__
    return self._bindAndExec(args, kw, None)
  File "/home/shared/zope271/lib/python/Shared/DC/Scripts/Bindings.py", line 343, in _bindAndExec
    return self._exec(bound_data, args, kw)
  File "/home/shared/zope271/lib/python/Products/PageTemplates/PageTemplateFile.py", line 106, in _exec
    return self.pt_render(extra_context=bound_names)
  File "/home/shared/zope271/lib/python/Products/PageTemplates/PageTemplate.py", line 96, in pt_render
    tal=not source, strictinsert=0)()
  File "/home/shared/zope271/lib/python/TAL/TALInterpreter.py", line 189, in __call__
    self.interpret(self.program)
  File "/home/shared/zope271/lib/python/TAL/TALInterpreter.py", line 233, in interpret
    handlers[opcode](self, args)
  File "/home/shared/zope271/lib/python/TAL/TALInterpreter.py", line 605, in do_loop_tal
    self.interpret(block)
  File "/home/shared/zope271/lib/python/TAL/TALInterpreter.py", line 233, in interpret
    handlers[opcode](self, args)
  File "/home/shared/zope271/lib/python/TAL/TALInterpreter.py", line 561, in do_insertStructure_tal
    structure = self.engine.evaluateStructure(expr)
  File "/home/shared/zope271/lib/python/Products/PageTemplates/TALES.py", line 221, in evaluate
    return expression(self)
  File "/home/shared/zope271/lib/python/Products/PageTemplates/ZRPythonExpr.py", line 47, in __call__
    return eval(code, g, {})
  File "Python expression "here.render_issue_contents(item['issue'])"", line 1, in <expression>
  File "/home/shared/zope271/instance/Products/IssueDealerWeblog/local_weblog_publisher.py", line 249, in render_issue_contents
    return issue.render_contents_weblog()
  File "/home/shared/zope271/instance/Products/IssueDealer/issue.py", line 485, in render_contents_weblog
    return self.render_contents()
  File "/home/shared/zope271/instance/Products/IssueDealer/issue.py", line 457, in render_contents
    return self.render_text_as_html()
  File "/home/shared/zope271/instance/Products/IssueDealer/issue.py", line 200, in render_text_as_html
    size = self.get_user_preferences().issue_contents_size
  File "/home/shared/zope271/instance/Products/IssueDealer/base.py", line 169, in get_user_preferences
    return self.get_issue_dealer()[self.REQUEST.SESSION['preferences']]
  File "/home/shared/zope271/lib/python/ZPublisher/HTTPRequest.py", line 1218, in __getattr__
    v = self.get(key, default, returnTaints=returnTaints)
  File "/home/shared/zope271/lib/python/ZPublisher/HTTPRequest.py", line 1178, in get
    if callable(v): v = v()
  File "/home/shared/zope271/lib/python/Products/Sessions/SessionDataManager.py", line 94, in getSessionData
    return self._getSessionDataObject(key)
  File "/home/shared/zope271/lib/python/Products/Sessions/SessionDataManager.py", line 183, in _getSessionDataObject
    if getattr(ob, '__of__', None) and getattr(ob, 'aq_parent', None):
SystemError: error return without exception set

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