----- Original Message -----
From: <[EMAIL PROTECTED]>
To: "Jonathan" <[EMAIL PROTECTED]>
Cc: "Dennis Allison" <[EMAIL PROTECTED]>; <firstname.lastname@example.org>
Sent: Wednesday, July 05, 2006 3:25 PM
Subject: Re: [Zope] Trying to trap ConflictError
Jonathan wrote at 2006-7-5 14:40 -0400:
The id for the image object is generated by the following code:
ts = string.replace(str(time.time()),'.', '') # remove floating point
So there should not be any collision of ids.
You should verify this. I doubt that you are right, as both the
scheduling as well as the clock granularity are discrete (and rather
I suggest you use either the mechanism of
* the "BrowserIdManager"::it combines a time with a random number
* the "ZCatalog": it chooses per thread a random number and
then assignes sequentially, until a conflict happens.
Then it restarts (choosing a random number...)
I am still investing, and have found errors like:
2006-07-04T14:48:12 ERROR ZODB.Connection Couldn't load state for 0x1c
Traceback (most recent call last):
File "/usr/local/Zope-2.9.2/lib/python/ZODB/Connection.py", line 732, in
File "/usr/local/Zope-2.9.2/lib/python/ZODB/Connection.py", line 768, in
p, serial = self._storage.load(obj._p_oid, self._version)
line 104, in load
in the event.log.
Apparently, you have more than a single type of error...
Are you the person that used "try: ... except: ..."?
The non-deterministic inconsistencies caused by such constructs
can look like what you decribe above...
I was originally using the try/except to trap the conflict error, but as a
result of being educated as to the futility of that approach I have since
removed the try/except.
I have also included a random 3 digit suffix in the id generation routine to
address the issue of muliple processes potentially generating the same id.
However, the conflict errors remain, so I am back to investigating...
Thanks for the help,
Zope maillist - Zope@zope.org
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