philipuvarov opened a new issue, #29831:
URL: https://github.com/apache/superset/issues/29831
### Bug description
Hey! This is probably on weirder side of things, but I wanted to create a
job in `superset_config.py` to update some things and i have noticed that even
though I am doing thing in a separate thread, it still hangs the whole app.
So basically if I add something like this in `superset_config.py`
```
In `superset_config.py` add:
```
import time
from threading import Thread
def _updates():
time.sleep(1800)
data_updates = Thread(target=_updates)
data_updates.start()
```
the app freezes until `sleep` finishes. Is this an expected behavior?
### How to reproduce the bug
In `superset_config.py` add:
```
import time
from threading import Thread
def _updates():
time.sleep(1800)
data_updates = Thread(target=_updates)
data_updates.start()
```
App becomes unresponsive until `sleep` finishes even though it is executed
on another thread.
### Screenshots/recordings
_No response_
### Superset version
master / latest-dev
### Python version
3.9
### Node version
16
### Browser
Chrome
### Additional context
_No response_
### Checklist
- [X] I have searched Superset docs and Slack and didn't find a solution to
my problem.
- [X] I have searched the GitHub issue tracker and didn't find a similar bug
report.
- [X] I have checked Superset's logs for errors and if I found a relevant
Python stacktrace, I included it here as text in the "additional context"
section.
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