Dan Davydov created AIRFLOW-919:
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Summary: Setting a task to running manually breaks a DAGs UI
Key: AIRFLOW-919
URL: https://issues.apache.org/jira/browse/AIRFLOW-919
Project: Apache Airflow
Issue Type: Bug
Components: webserver
Reporter: Dan Davydov
If you set a task instance with no start date to the RUNNING state manually
(e.g. in the CRUD), you get the following traceback due to the lack of a start
date for the task instance:
{code}
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1817, in
wsgi_app
response = self.full_dispatch_request()
File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1477, in
full_dispatch_request
rv = self.handle_user_exception(e)
File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1381, in
handle_user_exception
reraise(exc_type, exc_value, tb)
File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1475, in
full_dispatch_request
rv = self.dispatch_request()
File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1461, in
dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "/usr/local/lib/python2.7/dist-packages/flask_admin/base.py", line 68,
in inner
return self._run_view(f, *args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/flask_admin/base.py", line 367,
in _run_view
return fn(self, *args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/flask_login.py", line 758, in
decorated_view
return func(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/airflow/www/utils.py", line 221,
in view_func
return f(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/airflow/www/utils.py", line 125,
in wrapper
return f(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/airflow/www/views.py", line
1248, in tree
'children': [recurse_nodes(t, set()) for t in dag.roots],
File "/usr/local/lib/python2.7/dist-packages/airflow/www/views.py", line
1235, in recurse_nodes
for d in dates],
File "/usr/local/lib/python2.7/dist-packages/airflow/www/views.py", line
1224, in set_duration
d = datetime.now() - dateutil.parser.parse(tid["start_date"])
File "/usr/local/lib/python2.7/dist-packages/dateutil/parser.py", line 1164,
in parse
return DEFAULTPARSER.parse(timestr, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/dateutil/parser.py", line 552,
in parse
res, skipped_tokens = self._parse(timestr, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/dateutil/parser.py", line 671,
in _parse
l = _timelex.split(timestr) # Splits the timestr into tokens
File "/usr/local/lib/python2.7/dist-packages/dateutil/parser.py", line 188,
in split
return list(cls(s))
File "/usr/local/lib/python2.7/dist-packages/dateutil/parser.py", line 184,
in next
return self.__next__() # Python 2.x support
File "/usr/local/lib/python2.7/dist-packages/dateutil/parser.py", line 177,
in __next__
token = self.get_token()
File "/usr/local/lib/python2.7/dist-packages/dateutil/parser.py", line 93, in
get_token
nextchar = self.instream.read(1)
AttributeError: 'NoneType' object has no attribute 'read'
{code}
Instead we should display an empty start date.
[~bolke]
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