Snowflake Connector for Python release notes for 2024¶

Bumped the pyOpenSSL dependency from >=16.2.0,<25.0.0 to >=22.0.0,<25.0.0.

Fixed a bug where multi-part uploads to Azure were missing their MD5 hashes.

Fixed a bug where OpenTelemetry header injection would sometimes cause Exceptions to be thrown.

Fixed a bug where OCSP checks would throw TypeError and make mainly GCP blob storage unreachable.

Addressed issues raised by CVE-2024-49750. For more information, see advisory GHSA-5vvg-pvhp-hv2m.

Improved the error message for SSL-related issues to provide clearer resolution guidance.

Improved the error message for SQL execution cancellations caused by a timeout.

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Improved error handling for asynchronous queries, providing more detailed and informative error messages when an async query fails.

Improved inference of top-level domains for accounts specifying a region in China, now defaulting to snowflakecomputing.cn.

Improved implementation of snowflake.connector.util_text.random_string to reduce the likelihood of collisions.

Updated the log level for OCSP fail-open warning messages from ERROR to WARNING.

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Fixed a bug that logged the session token when renewing a session.

Fixed a bug where disabling client telemetry did not work.

Fixed a bug where passing login_timeout as a string raised a TypeError during the login retry step.

Updated the connector to use pathlib instead of os for resolving the default configuration file location.

Removed the upper cryptogaphy version pin.

Removed references to the snowflake-export-certs script, as its backing module was removed in a previous version.

Enhanced the retry mechanism for handling transient network failures during query result polling when no server response is received.

Set the default connection timeout to 10 seconds and the socket read time to 10 minutes for HTTP calls in file transfers.

Added the ability to connect to multiple domains.

Optimized to_pandas() performance by using fully-parallel downloading logic.

Bumped the keyring dependency from g>=23.1.0,<25.0.0 to g>=23.1.0,<26.0.0.

Fixed a bug where specifying client_session_keep_alive_heartbeat_frequency in snowflake-sqlalchemy could make the connector unresponsive.

Fixed an incorrect private_key connection parameter type hint.

Added support for the token_file_path connection parameter to read an OAuth token from a file when connecting to Snowflake.

Added support for the debug_arrow_chunk connection parameter to allow debugging raw arrow data in cases of arrow data parsing failures.

Added support for the disable_saml_url_check connection parameter to disable SAML URL checks in OKTA authentication.

Fixed a bug where OCSP certificates signed using SHA384 algorithm cannot be verified.

Fixed a bug where the status code showed as uploaded when a PUT command failed with a 400 error.

Fixed a bug where a PermissionError was raised when the current user does not have the right permission on parent directory of configuration file path.

Fixed a bug where an OCSP GET URL is not encoded correctly when it contains a slash.

Fixed a bug where an SSO URL didn’t accept : in a query parameter, such as in https://sso.abc.com/idp/startSSO.ping?PartnerSpId=https://xyz.snowflakecomputing.com/.

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Removed an incorrect error log message that could occur during arrow data conversion.

Added support for structured types to fetch_pandas_all.

Fixed an issue relating to incorrectly formed China S3 endpoints.

Fixed an issue that caused a HTTP 400 error when connecting to a China endpoint.

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Added support for log settings in a logging configuration file.

Improved S3 acceleration logic when connecting to a China endpoint.

None.

Fixed a bug that the truncated password in log is not masked.

Bumped the following dependencies:

• pandas from version >=1.0.0,<2.2.0 to >=1.0.0,<3.0.0

• cryptography from version <42.0.0,>=3.1.0 to >=3.1.0,<43.0.0

• pyOpenSSL from version >=16.2.0,<24.0.0 to >=16.2.0,<25.0.0

Bumped the keyring dependency lower bound to version 23.1.0 to address a security vulnerability.

Fixed a memory leak in decimal data conversion.

Fixed a bug where write_pandas wasn’t truncating the target table.

Added support for Python 3.12.

Added a new Boolean force_return_table parameter to SnowflakeCursor.fetch_arrow_all to force returning pyarrow.Table in case of zero rows.

Cleanup some C++ code warnings and performance issues.

Made local testing more robust against implicit assumptions.

Added support for connecting using an existing connection via the session and master token.

Added support for connecting to Snowflake by authenticating with multiple SAML IDP using an external browser.

Improved configuration permissions warning message.

Fixed an issue with PyArrow Table type hinting.

Fixed a compilation issue due to a missing cstdint header on gcc13.