Re: [Zope-dev] Conflict Errors; how to track them down?
Bjorn Stabell wrote: In any case, is there no way to find out more detailed information about why a conflict happened? There must be some oids somewhere? I don't know of a way. In a conflict, the transaction gets aborted, so the only data left is the log entry. Shane ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Conflict Errors; how to track them down?
Bjorn Stabell wrote at 2003-6-3 11:08 +0800:
Except for SARS, another problem that's been plagueing us for months are
seemingly random Conflict Errors. We see about 10 every day on our Zope
2.6.1, and they can happen on any page. In most cases they are not
related to pages that actually updated anything (AFAIK), although we do
use SESSIONS (but no frames). Any clue how to track down which objects
are having problems, what's causing this?
--
2003-06-03T09:08:10 INFO(0) ZODB conflict error at
/VirtualHostBase/http/www.beijingsammies.com:80/sammies/VirtualHostRoot/
(7 conflicts since startup at 2003-06-02T13:15:05)
The log message for conflict errors is far less instructive than
it could be (almost without any effort).
It should indicate whether it is a ReadConflictError or
a (Write)ConflictError.
It should tell which object caused the conflict.
The attached patch to Zope/App/startup.py provides this
additional information.
Please file a feature request to http://collector.zope.org/Zope.
Dieter
--- startup.py~ 2003-02-28 16:59:25.0 +0100
+++ startup.py 2003-03-17 11:13:28.0 +0100
@@ -140,9 +140,9 @@
global conflict_errors
conflict_errors = conflict_errors + 1
method_name = REQUEST.get('PATH_INFO', '')
-err = ('ZODB conflict error at %s '
+err = ('ZODB conflict error at %s: %s'
'(%s conflicts since startup at %s)')
-LOG(err % (method_name, conflict_errors, startup_time),
+LOG(err % (method_name, str(v), conflict_errors, startup_time),
INFO, '')
LOG('Conflict traceback', BLATHER, '', error=sys.exc_info())
raise ZPublisher.Retry(t, v, traceback)
Re: [Zope-dev] Conflict Errors; how to track them down?
Dieter Maurer wrote: The attached patch to Zope/App/startup.py provides this additional information. Where's the patch? cheers, Chris ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Conflict Errors; how to track them down?
Chris Withers wrote: Dieter Maurer wrote: The attached patch to Zope/App/startup.py provides this additional information. Where's the patch? http://marc.theaimsgroup.com/?l=zope-devm=105466926610469q=p3 -- Jamie Heilman http://audible.transient.net/~jamie/ I was in love once -- a Sinclair ZX-81. People said, No, Holly, she's not for you. She was cheap, she was stupid and she wouldn't load -- well, not for me, anyway. -Holly ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Conflict Errors; how to track them down?
On 06/02/2003 11:08 PM, Bjorn Stabell wrote: Hi all, Except for SARS, another problem that's been plagueing us for months are seemingly random Conflict Errors. We see about 10 every day on our Zope 2.6.1, and they can happen on any page. In most cases they are not related to pages that actually updated anything (AFAIK), although we do use SESSIONS (but no frames). Any clue how to track down which objects are having problems, what's causing this? Look at your undo log. If the conflicts don't correspond with entries in the undo log, and you're not mounting other databases, the conflicts are almost certainly due to sessions. However, conflicts are a normal occurrence and rarely reach the user. Zope automatically retries the request and delivers the successful page. Shane ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
RE: [Zope-dev] Conflict Errors; how to track them down?
On 06/02/2003 11:08 PM, Bjorn Stabell wrote: Except for SARS, another problem that's been plagueing us for months are seemingly random Conflict Errors. We see about 10 every day on our Zope 2.6.1, and they can happen on any page. In most cases they are not related to pages that actually updated anything (AFAIK), although we do use SESSIONS (but no frames). Any clue how to track down which objects are having problems, what's causing this? Shane wrote: Look at your undo log. If the conflicts don't correspond with entries in the undo log, and you're not mounting other databases, the conflicts are almost certainly due to sessions. However, conflicts are a normal occurrence and rarely reach the user. Zope automatically retries the request and delivers the successful page. They do not always correspond to entries in the undo log. But the ones that do are always (?) committed successfully. The problem is, as I can see from other threads here, that they are related to other systems that cannot be rolled back (e.g., sending email / faxes), so we get duplicate emails / faxes. I'll look at how to wrap these systems in transaction-aware wrappers, as was mentioned in a related thread. In any case, is there no way to find out more detailed information about why a conflict happened? There must be some oids somewhere? Regards, -- Bjorn ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
