matthewdeng commented on issue #41087:
URL: https://github.com/apache/arrow/issues/41087#issuecomment-2073833604

   Thanks @kou! I forgot to mention that deleting the `filesystem` _does_ 
resolve the issue:
   
   **Explicitly:**
   ```python
   import pyarrow.fs
   filesystem = pyarrow.fs.S3FileSystem(role_arn="...")
   del filesystem
   ```
   
   **Implicitly:**
   ```python
   import pyarrow.fs
   
   def main():
       filesystem = pyarrow.fs.S3FileSystem(role_arn="...")
   
   main()
   ```
   
   Separately, I also just tried this with `pyarrow==16.0.0` which was recently 
released, and it seems like the issue no longer surfaces. Let me do some more 
extensive validation, if I'm no longer able to reproduce the issue in this 
version I can close this issue.


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