Error in reloading the post object from database
 
   
  
 
 
I have setup Celery to send notifications asynchronously.
 
In send_instant_notifications_about_activity_in_post  Post object is reloaded and got this error.
 
2014-05-24 22:35:47,659: ERROR/MainProcess] Task askbot.tasks.send_instant_notifications_about_activity_in_post[3c31870b-14f0-4d9a-9429-6c8040f5426d] raised unexpected: DoesNotExist("Post matching query does not exist. Lookup parameters were {'id': 8}",)
Traceback (most recent call last):
 
File "/home/ubuntu/.virtualenvs/lawayo/local/lib/python2.7/site-packages/celery/app/trace.py", line 240, in trace_task
    R = retval = fun(args, *kwargs)
 
File "/home/ubuntu/.virtualenvs/lawayo/local/lib/python2.7/site-packages/celery/app/trace.py", line 437, in __protected_call__
    return self.run(args, *kwargs)
 
File "/home/ubuntu/public_html/lawayo.com/lawayo/askbot/tasks.py", line 216, in send_instant_notifications_about_activity_in_post
    post = Post.objects.get(id=post.id)
 
File "/home/ubuntu/.virtualenvs/lawayo/local/lib/python2.7/site-packages/Django-1.5-py2.7.egg/django/db/models/manager.py", line 143, in get
    return self.get_query_set().get(args, *kwargs)
 
File "/home/ubuntu/.virtualenvs/lawayo/local/lib/python2.7/site-packages/Django-1.5-py2.7.egg/django/db/models/query.py", line 401, in get
    (self.model._meta.object_name, kwargs))
 
Exception: Post matching query does not exist. Lookup parameters were {'id': 8
 
ID is being retrieved from the object itself just to reload the object, still fetch failed.
Please help.
 
 
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 saumishr's avatar

      3
    
 
 
 
 saumishr 
 
 
    asked 10 years ago,
        
    updated 10 years ago 
 
 
 
 
        
 
 
 
Comments
 
 
 
 
  
 
 
 
From where did you download the Askbot code? What database is used and if it's MySQL - which storage engine?
 
 
 Evgeny's avatar Evgeny (10 years ago)   
 
 
  
 
 
  
 
 
 
Code is downloaded from the repository: https://github.com/ASKBOT/askbot-devel
Database used is PostgreSQL
 
 
 saumishr's avatar saumishr (10 years ago)   
 
 
  
 
 
  
 
 
 
Thanks, could you tell what you're doing exactly to reproduce this?
 
 
 Evgeny's avatar Evgeny (10 years ago)   
 
 
  
 
 
  
 
 
 
User commented on one of the answers and a task to send notification was scheduled. When the task was supposed to be executed, I got this error. Tried it again but couldn't reproduce it. Looks like some inconsistency was there between the post object passed to the celery task and actual object in the DB.
 
 
 saumishr's avatar saumishr (10 years ago)   
 
 
  
 
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