On Mon, Sep 14, 2009 at 11:39 PM, Benjamin Schuster-Böckler < b...@pearcomp.com> wrote:
> > Ok, I was mislead then. I thought I could use the task name to check > if a task is still in the queue, by catching "TaskAlreadyExistsError". > What's the best way to know if a task is still queued, then? > Set a flag in the datastore when the task has executed, and check for the existence of this flag. Task names are intended to prevent duplicate tasks being queued - for example, if you want to enqueue at most one task per minute, you could name the task "mytask-%Y%m%d" (substituting in the appropriate date). -Nick Johnson > > Best, > Benjamin > > On 15 Sep 2009, at 00:36, Nick Johnson (Google) wrote: > > > Hi Benjamin, > > > > As the docs say, tombstoned tasks stay that way for at least a week. > > Generally you should never try and reuse a task name - generate a > > task you expect to be unique each time. > > > > -Nick Johnson > > > > On Mon, Sep 14, 2009 at 11:19 PM, Benjamin Schuster-Böckler < > b...@pearcomp.com > > > wrote: > > > > I'm getting these a lot when trying to add new tasks to a queue. My > > understanding is that GAE will keep a "tombstone" for a task that > > quit "recently", and if I try to add another task with the same name, > > it'll bum out. How long is this "tombstone" gonna stay in place? The > > tasks that are raising this exception have finished several hours ago. > > I can't find any information on this in the docs either. > > > > Thanks for the info, best, > > > > Benjamin > > > > -- > > Benjamin Schuster-Böckler > > Pear Computer LLP > > > > 86 Cavendish Road > > Cambridge CB1 3AF > > United Kingdom > > > > Company No. OC340192 > > VAT No. 971 3948 85 > > > > > > > > > > > > > > -- > > Nick Johnson, Developer Programs Engineer, App Engine > > > > > > > > > -- > Benjamin Schuster-Böckler > Pear Computer LLP > > 86 Cavendish Road > Cambridge CB1 3AF > United Kingdom > > Company No. OC340192 > VAT No. 971 3948 85 > > > > > -- Nick Johnson, Developer Programs Engineer, App Engine Google Ireland Ltd. :: Registered in Dublin, Ireland, Registration Number: 368047 --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~----------~----~----~----~------~----~------~--~---
