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There is no open Github issue for this PR as it is initiated internally within Snowflake.
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Please describe how your code solves the related issue.
A bug was identified in PR #1397 whereby the first time the udf_utils module is loaded, the callback value is read and never updated. This is because of the semantics of
from ... import
in Python (vsimport <module>
). The bug was not detected by the existing tests because they incorrectly mocked the state. The tests have been updated now, and the behaviour was verified manually through an end-to-end example. I verified that the tests fail without the associated code change.