[ 
https://issues.apache.org/jira/browse/AIRFLOW-1264?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Rui Wang updated AIRFLOW-1264:
------------------------------
    Description: 
After cleared a task of a DAG, saw following error returned by webserver, the 
error could be reproduced on specific dag_run.

One guess is DAG related file change caused this issue. Not sure if this issue 
can be reproduced again.

{panel}
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/newrelic/hooks/framework_flask.py", 
line 103, in nr_wrapper_Flask_handle_exception
return wrapped(*args, **kwargs)
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/newrelic/hooks/framework_flask.py", 
line 40, in nr_wrapper_handler
return wrapped(*args, **kwargs)
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-0.2.11-py2.7.egg/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 125, 
in wrapper
return f(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/airflow/www/utils.py", line 174, 
in wrapper
return f(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/airflow/www/views.py", line 1038, 
in clear
include_upstream=upstream)
File "/usr/local/lib/python2.7/dist-packages/airflow/models.py", line 3123, in 
sub_dag
dag = copy.deepcopy(self)
File "/usr/lib/python2.7/copy.py", line 174, in deepcopy
y = copier(memo)
File "/usr/local/lib/python2.7/dist-packages/airflow/models.py", line 3109, in 
_deepcopy_
setattr(result, k, copy.deepcopy(v, memo))
File "/usr/lib/python2.7/copy.py", line 163, in deepcopy
y = copier(x, memo)
File "/usr/lib/python2.7/copy.py", line 257, in _deepcopy_dict
y[deepcopy(key, memo)] = deepcopy(value, memo)
File "/usr/lib/python2.7/copy.py", line 174, in deepcopy
y = copier(memo)
File "/usr/local/lib/python2.7/dist-packages/airflow/models.py", line 2204, in 
_deepcopy_
setattr(result, k, copy.deepcopy(v, memo))
File "/usr/lib/python2.7/copy.py", line 190, in deepcopy
y = _reconstruct(x, rv, 1, memo)
File "/usr/lib/python2.7/copy.py", line 334, in _reconstruct
state = deepcopy(state, memo)
File "/usr/lib/python2.7/copy.py", line 163, in deepcopy
y = copier(x, memo)
File "/usr/lib/python2.7/copy.py", line 257, in _deepcopy_dict
y[deepcopy(key, memo)] = deepcopy(value, memo)
File "/usr/lib/python2.7/copy.py", line 190, in deepcopy
y = _reconstruct(x, rv, 1, memo)
File "/usr/lib/python2.7/copy.py", line 334, in _reconstruct
state = deepcopy(state, memo)
File "/usr/lib/python2.7/copy.py", line 163, in deepcopy
y = copier(x, memo)
File "/usr/lib/python2.7/copy.py", line 257, in _deepcopy_dict
y[deepcopy(key, memo)] = deepcopy(value, memo)
File "/usr/lib/python2.7/copy.py", line 190, in deepcopy
y = _reconstruct(x, rv, 1, memo)
File "/usr/lib/python2.7/copy.py", line 334, in _reconstruct
state = deepcopy(state, memo)
File "/usr/lib/python2.7/copy.py", line 163, in deepcopy
y = copier(x, memo)
File "/usr/lib/python2.7/copy.py", line 257, in _deepcopy_dict
y[deepcopy(key, memo)] = deepcopy(value, memo)
File "/usr/lib/python2.7/copy.py", line 190, in deepcopy
y = _reconstruct(x, rv, 1, memo)
File "/usr/lib/python2.7/copy.py", line 334, in _reconstruct
state = deepcopy(state, memo)
File "/usr/lib/python2.7/copy.py", line 163, in deepcopy
y = copier(x, memo)
File "/usr/lib/python2.7/copy.py", line 257, in _deepcopy_dict
y[deepcopy(key, memo)] = deepcopy(value, memo)
File "/usr/lib/python2.7/copy.py", line 190, in deepcopy
y = _reconstruct(x, rv, 1, memo)
File "/usr/lib/python2.7/copy.py", line 329, in _reconstruct
y = callable(*args)
File "/usr/lib/python2.7/copy_reg.py", line 93, in _newobj_
return cls._new_(cls, *args)
TypeError: _new_() takes at least 2 arguments (1 given)
{panel}

  was:
After cleared a task of a DAG, saw following error returned by webserver, the 
error could be reproduced.

{panel}
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/newrelic/hooks/framework_flask.py", 
line 103, in nr_wrapper_Flask_handle_exception
return wrapped(*args, **kwargs)
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/newrelic/hooks/framework_flask.py", 
line 40, in nr_wrapper_handler
return wrapped(*args, **kwargs)
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-0.2.11-py2.7.egg/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 125, 
in wrapper
return f(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/airflow/www/utils.py", line 174, 
in wrapper
return f(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/airflow/www/views.py", line 1038, 
in clear
include_upstream=upstream)
File "/usr/local/lib/python2.7/dist-packages/airflow/models.py", line 3123, in 
sub_dag
dag = copy.deepcopy(self)
File "/usr/lib/python2.7/copy.py", line 174, in deepcopy
y = copier(memo)
File "/usr/local/lib/python2.7/dist-packages/airflow/models.py", line 3109, in 
_deepcopy_
setattr(result, k, copy.deepcopy(v, memo))
File "/usr/lib/python2.7/copy.py", line 163, in deepcopy
y = copier(x, memo)
File "/usr/lib/python2.7/copy.py", line 257, in _deepcopy_dict
y[deepcopy(key, memo)] = deepcopy(value, memo)
File "/usr/lib/python2.7/copy.py", line 174, in deepcopy
y = copier(memo)
File "/usr/local/lib/python2.7/dist-packages/airflow/models.py", line 2204, in 
_deepcopy_
setattr(result, k, copy.deepcopy(v, memo))
File "/usr/lib/python2.7/copy.py", line 190, in deepcopy
y = _reconstruct(x, rv, 1, memo)
File "/usr/lib/python2.7/copy.py", line 334, in _reconstruct
state = deepcopy(state, memo)
File "/usr/lib/python2.7/copy.py", line 163, in deepcopy
y = copier(x, memo)
File "/usr/lib/python2.7/copy.py", line 257, in _deepcopy_dict
y[deepcopy(key, memo)] = deepcopy(value, memo)
File "/usr/lib/python2.7/copy.py", line 190, in deepcopy
y = _reconstruct(x, rv, 1, memo)
File "/usr/lib/python2.7/copy.py", line 334, in _reconstruct
state = deepcopy(state, memo)
File "/usr/lib/python2.7/copy.py", line 163, in deepcopy
y = copier(x, memo)
File "/usr/lib/python2.7/copy.py", line 257, in _deepcopy_dict
y[deepcopy(key, memo)] = deepcopy(value, memo)
File "/usr/lib/python2.7/copy.py", line 190, in deepcopy
y = _reconstruct(x, rv, 1, memo)
File "/usr/lib/python2.7/copy.py", line 334, in _reconstruct
state = deepcopy(state, memo)
File "/usr/lib/python2.7/copy.py", line 163, in deepcopy
y = copier(x, memo)
File "/usr/lib/python2.7/copy.py", line 257, in _deepcopy_dict
y[deepcopy(key, memo)] = deepcopy(value, memo)
File "/usr/lib/python2.7/copy.py", line 190, in deepcopy
y = _reconstruct(x, rv, 1, memo)
File "/usr/lib/python2.7/copy.py", line 334, in _reconstruct
state = deepcopy(state, memo)
File "/usr/lib/python2.7/copy.py", line 163, in deepcopy
y = copier(x, memo)
File "/usr/lib/python2.7/copy.py", line 257, in _deepcopy_dict
y[deepcopy(key, memo)] = deepcopy(value, memo)
File "/usr/lib/python2.7/copy.py", line 190, in deepcopy
y = _reconstruct(x, rv, 1, memo)
File "/usr/lib/python2.7/copy.py", line 329, in _reconstruct
y = callable(*args)
File "/usr/lib/python2.7/copy_reg.py", line 93, in _newobj_
return cls._new_(cls, *args)
TypeError: _new_() takes at least 2 arguments (1 given)
{panel}


> Could not clear task
> --------------------
>
>                 Key: AIRFLOW-1264
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-1264
>             Project: Apache Airflow
>          Issue Type: Bug
>            Reporter: Rui Wang
>
> After cleared a task of a DAG, saw following error returned by webserver, the 
> error could be reproduced on specific dag_run.
> One guess is DAG related file change caused this issue. Not sure if this 
> issue can be reproduced again.
> {panel}
> 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/newrelic/hooks/framework_flask.py", 
> line 103, in nr_wrapper_Flask_handle_exception
> return wrapped(*args, **kwargs)
> 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/newrelic/hooks/framework_flask.py", 
> line 40, in nr_wrapper_handler
> return wrapped(*args, **kwargs)
> 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-0.2.11-py2.7.egg/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 125, 
> in wrapper
> return f(*args, **kwargs)
> File "/usr/local/lib/python2.7/dist-packages/airflow/www/utils.py", line 174, 
> in wrapper
> return f(*args, **kwargs)
> File "/usr/local/lib/python2.7/dist-packages/airflow/www/views.py", line 
> 1038, in clear
> include_upstream=upstream)
> File "/usr/local/lib/python2.7/dist-packages/airflow/models.py", line 3123, 
> in sub_dag
> dag = copy.deepcopy(self)
> File "/usr/lib/python2.7/copy.py", line 174, in deepcopy
> y = copier(memo)
> File "/usr/local/lib/python2.7/dist-packages/airflow/models.py", line 3109, 
> in _deepcopy_
> setattr(result, k, copy.deepcopy(v, memo))
> File "/usr/lib/python2.7/copy.py", line 163, in deepcopy
> y = copier(x, memo)
> File "/usr/lib/python2.7/copy.py", line 257, in _deepcopy_dict
> y[deepcopy(key, memo)] = deepcopy(value, memo)
> File "/usr/lib/python2.7/copy.py", line 174, in deepcopy
> y = copier(memo)
> File "/usr/local/lib/python2.7/dist-packages/airflow/models.py", line 2204, 
> in _deepcopy_
> setattr(result, k, copy.deepcopy(v, memo))
> File "/usr/lib/python2.7/copy.py", line 190, in deepcopy
> y = _reconstruct(x, rv, 1, memo)
> File "/usr/lib/python2.7/copy.py", line 334, in _reconstruct
> state = deepcopy(state, memo)
> File "/usr/lib/python2.7/copy.py", line 163, in deepcopy
> y = copier(x, memo)
> File "/usr/lib/python2.7/copy.py", line 257, in _deepcopy_dict
> y[deepcopy(key, memo)] = deepcopy(value, memo)
> File "/usr/lib/python2.7/copy.py", line 190, in deepcopy
> y = _reconstruct(x, rv, 1, memo)
> File "/usr/lib/python2.7/copy.py", line 334, in _reconstruct
> state = deepcopy(state, memo)
> File "/usr/lib/python2.7/copy.py", line 163, in deepcopy
> y = copier(x, memo)
> File "/usr/lib/python2.7/copy.py", line 257, in _deepcopy_dict
> y[deepcopy(key, memo)] = deepcopy(value, memo)
> File "/usr/lib/python2.7/copy.py", line 190, in deepcopy
> y = _reconstruct(x, rv, 1, memo)
> File "/usr/lib/python2.7/copy.py", line 334, in _reconstruct
> state = deepcopy(state, memo)
> File "/usr/lib/python2.7/copy.py", line 163, in deepcopy
> y = copier(x, memo)
> File "/usr/lib/python2.7/copy.py", line 257, in _deepcopy_dict
> y[deepcopy(key, memo)] = deepcopy(value, memo)
> File "/usr/lib/python2.7/copy.py", line 190, in deepcopy
> y = _reconstruct(x, rv, 1, memo)
> File "/usr/lib/python2.7/copy.py", line 334, in _reconstruct
> state = deepcopy(state, memo)
> File "/usr/lib/python2.7/copy.py", line 163, in deepcopy
> y = copier(x, memo)
> File "/usr/lib/python2.7/copy.py", line 257, in _deepcopy_dict
> y[deepcopy(key, memo)] = deepcopy(value, memo)
> File "/usr/lib/python2.7/copy.py", line 190, in deepcopy
> y = _reconstruct(x, rv, 1, memo)
> File "/usr/lib/python2.7/copy.py", line 329, in _reconstruct
> y = callable(*args)
> File "/usr/lib/python2.7/copy_reg.py", line 93, in _newobj_
> return cls._new_(cls, *args)
> TypeError: _new_() takes at least 2 arguments (1 given)
> {panel}



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