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"databricks.sql.exc.RequestError: Error during request to server" with versions 2.6 onwards #169

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@DJSaunders1997

Description

@DJSaunders1997

When running the quickstart example, I get errors initializing the connection unless I downgrade the package version to 2.5 .

With version 2.6 and above

Error Trace:

$ python example.py
Traceback (most recent call last):
  File "C:\Users\<username>\Databricks_SQL\example.py", line 8, in <module>
    connection = sql.connect(
  File "C:\Users\<username>\AppData\Local\anaconda3\envs\databrickssqlenv_2\lib\site-packages\databricks\sql\__init__.py", line 50, in connect
    return Connection(server_hostname, http_path, access_token, **kwargs)
  File "C:\Users\<username>\AppData\Local\anaconda3\envs\databrickssqlenv_2\lib\site-packages\databricks\sql\client.py", line 189, in __init__
    self._session_handle = self.thrift_backend.open_session(
  File "C:\Users\<username>\AppData\Local\anaconda3\envs\databrickssqlenv_2\lib\site-packages\databricks\sql\thrift_backend.py", line 469, in open_session
    response = self.make_request(self._client.OpenSession, open_session_req)
  File "C:\Users\<username>\AppData\Local\anaconda3\envs\databrickssqlenv_2\lib\site-packages\databricks\sql\thrift_backend.py", line 398, in make_request
    self._handle_request_error(error_info, attempt, elapsed)
  File "C:\Users\<username>\AppData\Local\anaconda3\envs\databrickssqlenv_2\lib\site-packages\databricks\sql\thrift_backend.py", line 262, in _handle_request_error
    raise network_request_error
databricks.sql.exc.RequestError: Error during request to server

With downgraded version 2.5

Code works as expected

$ python example.py
Row(id=0)
Row(id=1)
Row(id=2)
Row(id=3)
Row(id=4)
Row(id=5)
Row(id=6)
Row(id=7)
Row(id=8)
Row(id=9)

Environment

It's a pretty standard environment, but for reproducibility:

OS - Windows 10

conda.yml:

name: databrickssqlenv

dependencies:
  - python=3.10
  - pip
  - pip:
    - databricks-sql-connector

Fix

Is there a known fix for this issue? I'd like to use the latest version to enable features such as Azure OAuth.

Thanks

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