Sounds like it would reliably set the flag, but probably not soon enough (at least in some situations) to beat the task queue retry....
On Apr 14, 7:14 pm, "Ikai L (Google)" <[email protected]> wrote: > I've seen another solution where you BCC your application and use that to > mark the flag as successful or not. > > > > > > On Wed, Apr 14, 2010 at 6:19 AM, hawkett <[email protected]> wrote: > > It seems the author is saying that he only sends one email per task, > > so the only 'email sent' flag to stick in memcache is the one that is > > occurring when the exception is raised. I'm not sure that solution > > will work - how can he know if an email has been sent successfully > > when the mail API is throwing an exception? He would need a list of > > the exceptions that occur *despite* the email being successfully > > sent. Seems a bit shaky to me. As the author says, this seems like a > > GAE bug - if GAE is going to raise the DeadlineExceededError on the > > mail API, then the mail should not be sent - either it succeeds within > > the deadline or it fails to meet the deadline - not both. I can see > > how this could be tricky to guarantee though.... > > > On Apr 12, 11:15 pm, "Ikai L (Google)" <[email protected]> wrote: > > > A possible solution would be to store emails where you have already sent > > a > > > message to in Memcache. If the tasks get retried, you check for the > > presence > > > of a key and email hash. If it exists, you don't send the message. If it > > > does not, you send the message and insert into Memcache. > > > > On Tue, Apr 6, 2010 at 3:33 PM, Ubaldo Huerta <[email protected]> wrote: > > > > I have a task that sends a single email which works well, but every > > > > now and then (every 100 emails or so, my guess), the tasks get's > > > > retried because of an exception is thrown while sending the email > > > > message. The problem is that the email message is actually sent even > > > > though the exception below is thrown. So, naturally, I'm lossing face > > > > sending duplicate emails. Is there a way around this before the bug > > > > gets fixed? :-( > > > > > File "/base/python_lib/versions/1/google/appengine/api/mail.py", line > > > > 742, in send > > > > make_sync_call('mail', self._API_CALL, message, response) > > > > File "/base/python_lib/versions/1/google/appengine/api/ > > > > apiproxy_stub_map.py", line 78, in MakeSyncCall > > > > return apiproxy.MakeSyncCall(service, call, request, response) > > > > File "/base/python_lib/versions/1/google/appengine/api/ > > > > apiproxy_stub_map.py", line 278, in MakeSyncCall > > > > rpc.CheckSuccess() > > > > File "/base/python_lib/versions/1/google/appengine/api/ > > > > apiproxy_rpc.py", line 126, in CheckSuccess > > > > raise self.exception > > > > DeadlineExceededError: The API call mail.Send() took too long to > > > > respond and was cancelled. > > > > > -- > > > > You received this message because you are subscribed to the Google > > Groups > > > > "Google App Engine" group. > > > > To post to this group, send email to [email protected] > > . > > > > To unsubscribe from this group, send email to > > > > [email protected]<google-appengine%2Bunsubscrib > > > > [email protected]><google-appengine%2Bunsubscrib > > [email protected]> > > > > . > > > > For more options, visit this group at > > > >http://groups.google.com/group/google-appengine?hl=en. > > > > -- > > > Ikai Lan > > > Developer Programs Engineer, Google App Enginehttp:// > > googleappengine.blogspot.com|http://twitter.com/app_engine > > > -- > > You received this message because you are subscribed to the Google Groups > > "Google App Engine" group. > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > > [email protected]<google-appengine%2Bunsubscrib > > [email protected]> > > . > > For more options, visit this group at > >http://groups.google.com/group/google-appengine?hl=en. > > -- > Ikai Lan > Developer Programs Engineer, Google App > Enginehttp://googleappengine.blogspot.com|http://twitter.com/app_engine -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
