anilvpatel21 opened a new issue #16495:
URL: https://github.com/apache/superset/issues/16495
A cron expression with "7" as sunday is accepted while creating a report
using an API. But its unable to read "7" as sunday using cron_descriptor, and
throwing 500 internal server error.
### Expected results
It should read 0 or 7 as Sunday.
### Actual results
Unable to read 7 as Sunday.
#### Screenshots
If applicable, add screenshots to help explain your problem.
#### How to reproduce the bug
1. Edit any existing alert with new crontab expression using an API
endpoints.
put request to /api/v1/report/{pk}
```
{
crontab: "* * * * 7"
}
```
It will be successful.
2. Now go to 'Report & Alert' section, you won't be able to see the list of
alerts & report.
3. In the backend, it has this error
```
line 147, in get_full_description
raise FormatException(description)
cron_descriptor.Exception.FormatException: An error occured when generating
the expression description. Check the cron expression syntax.
```
### Environment
- superset version: Superset 1.1.0
- python version: Python 2.7.16
- node.js version: v12.16.1
- any feature flags active:
```
DEFAULT_FEATURE_FLAGS = {
'ALERT_REPORTS': True,
}
```
### Checklist
Make sure to follow these steps before submitting your issue - thank you!
-
- [ yes ] I have checked the superset logs for python stacktraces and
included it here as text if there are any.
- [ yes ] I have reproduced the issue with at least the latest released
version of superset.
- [ yes ] I have checked the issue tracker for the same issue and I haven't
found one similar.
### Additional context
Need to upgrade the cron-descriptor PYPI package to the latest version.
Add any other context about the problem here.
Earlier 1.2.24 version does not support 7 as Sunday. Only Supports 5 or 6
(w/ seconds) part cron expressions.
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