pritt20 opened a new issue #10934:
URL: https://github.com/apache/airflow/issues/10934
**Apache Airflow version**:
1.10.10
**Kubernetes version (if you are using kubernetes)** (use `kubectl version`):
kubeenetes ver: 1.15.5
**Environment**:
- **Cloud provider or hardware configuration**: Used docker based Airflow
Image
- **OS** (e.g. from /etc/os-release): Debian
- **Kernel** (e.g. `uname -a`): 4.19.76-linuxkit x86_64 Linux
**What happened**:
When user navigates to tree view of dag and keep on clicking on `Go` button
at `number of runs` the` base date` cycle back to one dag run and in the end
when there is no dag run left, it shows `invalid date`. In the end user gets
below exception:
```
____/ ( ( ) ) \___
/( ( ( ) _ )) ) )\
(( ( )( ) ) ( ) )
((/ ( _( ) ( _) ) ( () ) )
( ( ( (_) (( ( ) .((_ ) . )_
( ( ) ( ( ) ) ) . ) ( )
( ( ( ( ) ( _ ( _) ). ) . ) ) ( )
( ( ( ) ( ) ( )) ) _)( ) ) )
( ( ( \ ) ( (_ ( ) ( ) ) ) ) )) ( )
( ( ( ( (_ ( ) ( _ ) ) ( ) ) )
( ( ( ( ( ) (_ ) ) ) _) ) _( ( )
(( ( )( ( _ ) _) _(_ ( (_ )
(_((__(_(__(( ( ( | ) ) ) )_))__))_)___)
((__) \\||lll|l||/// \_))
( /(/ ( ) ) )\ )
( ( ( ( | | ) ) )\ )
( /(| / ( )) ) ) )) )
( ( ((((_(|)_))))) )
( ||\(|(|)|/|| )
( |(||(||)|||| )
( //|/l|||)|\\ \ )
(/ / // /|//||||\\ \ \ \ _)
-------------------------------------------------------------------------------
Node: c6059861e1e9
-------------------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.7/site-packages/pendulum/parsing/parser.py",
line 352, in _parse
yearfirst=self._options['year_first']
File "/usr/local/lib/python3.7/site-packages/dateutil/parser/_parser.py",
line 1374, in parse
return DEFAULTPARSER.parse(timestr, **kwargs)
File "/usr/local/lib/python3.7/site-packages/dateutil/parser/_parser.py",
line 649, in parse
raise ParserError("Unknown string format: %s", timestr)
dateutil.parser._parser.ParserError: Unknown string format: Invalid date
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 2447, in
wsgi_app
response = self.full_dispatch_request()
File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 1952, in
full_dispatch_request
rv = self.handle_user_exception(e)
File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 1821, in
handle_user_exception
reraise(exc_type, exc_value, tb)
File "/usr/local/lib/python3.7/site-packages/flask/_compat.py", line 39,
in reraise
raise value
File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 1950, in
full_dispatch_request
rv = self.dispatch_request()
File "/usr/local/lib/python3.7/site-packages/flask/app.py", line 1936, in
dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File
"/usr/local/lib/python3.7/site-packages/airflow/www_rbac/decorators.py", line
121, in wrapper
return f(self, *args, **kwargs)
File
"/usr/local/lib/python3.7/site-packages/flask_appbuilder/security/decorators.py",
line 109, in wraps
return f(self, *args, **kwargs)
File
"/usr/local/lib/python3.7/site-packages/airflow/www_rbac/decorators.py", line
92, in view_func
return f(*args, **kwargs)
File
"/usr/local/lib/python3.7/site-packages/airflow/www_rbac/decorators.py", line
56, in wrapper
return f(*args, **kwargs)
File "/usr/local/lib/python3.7/site-packages/airflow/utils/db.py", line
74, in wrapper
return func(*args, **kwargs)
File "/usr/local/lib/python3.7/site-packages/airflow/www_rbac/views.py",
line 1406, in tree
base_date = timezone.parse(base_date)
File "/usr/local/lib/python3.7/site-packages/airflow/utils/timezone.py",
line 180, in parse
return pendulum.parse(string, tz=timezone or TIMEZONE)
File "/usr/local/lib/python3.7/site-packages/pendulum/parser.py", line 75,
in parse
return Parser(**options).parse(text)
File "/usr/local/lib/python3.7/site-packages/pendulum/parser.py", line 31,
in parse
parsed = super(Parser, self).parse(text)
File "/usr/local/lib/python3.7/site-packages/pendulum/parsing/parser.py",
line 297, in parse
return self.normalize(self._parse(text))
File "/usr/local/lib/python3.7/site-packages/pendulum/parsing/parser.py",
line 355, in _parse
raise ParserError('Invalid date string: {}'.format(text))
pendulum.parsing.exceptions.ParserError: Invalid date string: Invalid date
```
**What you expected to happen**:
User should not receive exception pendulum.parsing.exceptions.ParserError:
Invalid date string: Invalid date
**How to reproduce it**:
1. Create a sample dag/example dag with shorter scheduled interval
2. Have 2-3 dag runs.
3. Navigate to tree view and click on `Go `button
4. Keep clicking on Go button till there are no dag runs remaining, you
would get `pendulum.parsing.exceptions.ParserError: Invalid date string:
Invalid date `exception.
**Screenshot**:
How often does this problem occur? Once? Every time etc?
Everytime
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