ivanignatiev opened a new issue, #45065: URL: https://github.com/apache/arrow/issues/45065
### Describe the bug, including details regarding any error messages, version, and platform. As I have seen some issues ( like #40100 ) related to Access Violation on Windows in pyarrow I have decided to open this issue here. Maybe for other not reproducible issues with the same crash reason it is related to conflicts with other dependencies. We have a Python (3.12.5) Flask application which uses `Flask==3.1.0` and `Flask-SQLAlchemy==3.1.1`. As a connection driver, we had `mysql-connector-python==9.1.0`. On Windows 10, when `pyarrow` is installed (I have tested all versions from pyarrow 15, and Python 3.12 and 3.13, PyPi) application crashes when SQLAlchemy tries to open connection to MySQL (in our case just localhost with standard 3306 port). Here is faulthandler traces: <img width="1226" alt="image" src="https://github.com/user-attachments/assets/b4be23f9-114a-4888-9ea5-8e205e1b7f00" /> We have changed `mysql-connector-python` to `mysqlclient` and issue disappear. ### Component(s) Python -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@arrow.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org