[ARROW-17771] [Python] Python does not find the DLLs correctly on Windows

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 10.0.0
• Component/s: Python
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/32999
• Assignee: Alenka Frim
• Reporter: Alenka Frim
• Created: 19/Sep/22 07:09
• Updated: 11/Jan/23 11:55
• Resolved: 06/Oct/22 07:42

Description

It seems that after the Python refactoring PR https://github.com/apache/arrow/pull/13311 (ARROW-16340) Python is unable to find arrow_python even though the library it is imported into the correct directory.

Currently this issue is fixed with setting an additional environment variable:

CONDA_DLL_SEARCH_MODIFICATION_ENABLE=1

We need to investigate further why this error is happening after the refactoring and make sure Python is able to find the libraries on Windows without the additional env vars being specified.

Issue Links

• is related to: ARROW-17172 [C++][Python] test_cython_api fails on windows
• links to: GitHub Pull Request #14302