DatabaseError on report save about django-uwsgi-taskmanager HOT 7 CLOSED

somehow the original report has been deleted in the meantime, and this results in a new report object with an empty log save for the Started/Finished lines

from django-uwsgi-taskmanager.

I need a bit of information to try and help you.

How are you using the taskmanager (are you trying the demo project or are you using it inside one of your projects)?
Which django, and python releases are you using? I can see python 3.9, but what release of django?
When did this happen? While saving a report, but what kind of task where you running?

from django-uwsgi-taskmanager.

Hi! I am using the taskmanager inside of my project
The issue doesn't happen with scheduled, recurring tasks.
The problem task is started this way (inside a view)

Task.objects.filter(category__name="x", command__app_name="x", command__name="x", arguments="x").first().launch()

I am running django 3.1.4

from django-uwsgi-taskmanager.

This is almost definitely due to self.keep_last_n_reports() being called right after spooling, in the original thread. This has a race condition that can delete the report that has just been created in the spooler process. So when the spooler process then tries to update the report, it is already gone.
So:

• keep_last_n_reports should probably be run just before spooling, or at the end of exec_command_task
• use a transaction and select_for_update, or remove update_fields in report_obj.save

from django-uwsgi-taskmanager.

actually keep_last_n_reports is already run at the end of exec_command_task, so no need to run before spooling

from django-uwsgi-taskmanager.

Seems like a good one. Will merge.

from django-uwsgi-taskmanager.

Problem has beel fixed in release 2.2.9

from django-uwsgi-taskmanager.