[Zope] Re: External methods & persistance and thread safety
Wed, 04 Jun 2003 21:30:43 +0200
Dennis Allison wrote:
>> > Much of the heavy lifiting is done by python external methods and calls to
>> > systems programs through the os.system() method. It all works swimmingly
>> > but for a couple of instances of anomolous behavior--the wrong file
>> > getting written, for example.
Maybe your application suffers from ZODB-Read/Write-Conflicts. Have a
look into the error-log and search the archive for more info.
In short: If an object is currently in a transaction and another
transaction is started for this object, a conflict-error occurs.
Zope/ZODB tries 3 times to get around... Your external methods with
os-system-calls should handle this situation or you will encounter
"wired" problems from time to time. It's no fun to leave the holy world