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Simba Cassandra ODBC Data Connector Release Notes 
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The release notes provide details of enhancements, features, known issues, 
and workflow changes in Simba Cassandra ODBC Connector 2.8.5, as well as the 
version history.

This version of the Connector supports the following data source versions and
platforms:

 * Apache Cassandra versions 4.x to 5.x.
 * Windows 11, Windows Server 2025, 2022, 2019, or 2016
 * macOS 15 ARM, macOS 26 ARM
 * RHEL 8 ,9, or 10, SLES 15 or 16, Debian 10 ,11 ,or 13, Ubuntu 22.04 or 24.04


2.8.5 ========================================================================

Released 2026-06-08

Enhancements & New Features

 * Updated third-party libraries

   The connector now uses the following third-party libraries:
   - Expat 2.8.1 (previously 2.7.4)
   - OpenSSL 3.5.6 (previously 3.0.20)
   - libcurl 8.20

 * Updated SLES support

   The connector now supports SLES 16. For a list of supported operating
   systems, see the supported platforms listed at the beginning of these
   release notes.


Resolved Issues
The following issue has been resolved in Simba Cassandra ODBC Connector 2.8.5.

 * [CASSO-1172] Strings longer than 65536 characters are truncated, and only
   the trailing characters beyond that limit are displayed.


Known Issues
The following are known issues that you may encounter due to limitations in 
the data source, the connector, or an application.

 * INSERT statement fails when inserting multiple rows and binding the 
   DEFAULT value in the first row.

   When inserting multiple rows in a single SQL statement and binding the 
   DEFAULT value in the first row, the INSERT statement fails. As a 
   workaround, use NULL instead of DEFAULT.

 * Non-key virtual table columns are not nullable.

   Cassandra does not support null values in collections. The connector 
   reports non-key columns in virtual tables as not nullable.

 * On Cassandra 2.1.x, the connector returns incorrect values for VARINT 
   (SQL_NUMERIC) columns.

   This is due to a limitation in the Datastax cpp-driver. For more 
   information, see the following link:
   https://datastax-oss.atlassian.net/browse/CPP-419

 * If a user-defined type is the primary key of a table, none of the primary 
   key's fields can be null when it is used in an INSERT statement.

 * A column name collision occurs if a map contains two user-defined types 
   with identical field names, that is, if the map's key and value are the 
   same user-defined type.
   
 * [CASSO-752] Attempting to perform INSERT or UPDATE queries on tables with
   columns of type TUPLE or UDT (when ReturnUdtAsString is enabled) results in
   the connector returning an error.    


Workflow Changes =============================================================

The following changes may disrupt established workflows for the connector. 


2.8.1 ------------------------------------------------------------------------

 * Removed support for Windows 10

   Beginning with this release, the connector no longer supports Windows 10.


2.8.0 ------------------------------------------------------------------------

 * Removed support for multiple operating systems

   Beginning with this release, the connector no longer supports the following
   operating systems:
   - CentOS 8
   - macOS 11.0, 12.0, 13.0
   - SLES 12.0
   - Ubuntu 20.04
   - Windows 8.1
   - Windows Server 2012
   
   For a list of supported operating systems, see the Installation and 
   Configuration Guide.

 
2.7.5 ------------------------------------------------------------------------

 * Removed support for macOS 10.15 

   Beginning with this release, the connector no longer supports macOS 10.15. 
   For a list of supported macOS versions, see the Installation and 
   Configuration Guide.


2.7.4 ------------------------------------------------------------------------

 * Removed support for earlier operating system versions

   Beginning with this release, the connector no longer supports the following 
   operating system versions:
   - Centos 7
   - Debian 8, 9, and 10 
   - RHEL 7
   - Ubuntu 16.04 and 18.04
 
   For a list of supported operating system versions, see the Installation and 
   Configuration Guide.

 * Removed Visual Studio 2015 support 

   Beginning with this release, the connector no longer supports Visual Studio 
   2015. For information about the supported Visual C++ Redistributable for 
   Visual Studio versions, see the Installation and Configuration Guide.

 * Removed support for unused connection parameters

   Beginning with this release, the connector no longer supports the following
   connection parameters:
   - MaxConcurrentCreation
   - MaxConcurrentRequestsThreshold
   - MaxConnectionsPerHost
   - MaxRequestsPerFlush
   - PendingRequestsHighWaterMark
   - PendingRequestsLowWaterMark
   - QueueSizeEvent
   - WriteBytesHighWaterMark
   - WriteBytesLowWaterMark

   For a list of supported connection parameters, see the Installation and 
   Configuration Guide.


2.6.7 ------------------------------------------------------------------------

 * [CASSO-650] Support for earlier versions of Windows removed

   Beginning with this release, the connector no longer supports the following 
   versions of Windows:
   - Windows 7
   - Windows Server 2008
   - Windows Server 2008r2

   For a list of supported Windows versions, see the Installation and 
   Configuration Guide.

 * [CASSO-703] Support for macOS 10.12 and earlier removed

   Beginning with this release, the connector no longer supports the following 
   versions of macOS:
   - macOS 10.12
   - macOS 10.11
   - macOS 10.10
   - macOS 10.9

   For a list of supported macOS versions, see the Installation and 
   Configuration Guide.

 * [CASSO-670] Support for CentOS 6 and RHEL 6 removed

   Beginning with this release, the connector no longer supports the following 
   versions of Linux:
   - CentOS 6 
   - Red Hat Enterprise Linux (RHEL) 6

   For a list of supported Linux versions, see the Installation and 
   Configuration Guide.


2.6.6 ------------------------------------------------------------------------

 * Support for Visual Studio 2013 removed

   Beginning with this release, the connector no longer supports Visual Studio 
   2013. For a list of supported Visual Studio versions, see the Installation 
   and Configuration Guide.


2.6.0 ------------------------------------------------------------------------

 * Support for Apache Cassandra 2.0 removed

   Beginning with this release, the connector no longer supports Apache 
   Cassandra 2.0. For a list of supported Cassandra versions, see the 
   Installation and Configuration Guide.


Version History ==============================================================

2.8.4 ------------------------------------------------------------------------

Released 2026-04-20

Enhancements & New Features

 * Updated third-party libraries

   The connector now uses the following third-party libraries:
   - Expat 2.7.4 (previously 2.7.3)
   - OpenSSL 3.0.20 (previously 3.0.19)

2.8.3 ------------------------------------------------------------------------ 

Released 2026-04-07

Resolved Issues
The following issue has been resolved in Simba Cassandra ODBC Connector 2.8.3.

 * [CASSO-1163] The connector returns Unknown type error when creating table.


2.8.2 ------------------------------------------------------------------------ 

Released 2026-02-19

Enhancements & New Features

 * Updated OpenSSL support
   
   The connector now uses OpenSSL version 3.0.19. Previously, the connector 
   used OpenSSL version 3.0.18.


2.8.1 ------------------------------------------------------------------------ 

Released 2025-12-22

Enhancements & New Features

 * Updated support for macOS 26 ARM

   The connector now supports the macOS 26 ARM.


2.8.0 ------------------------------------------------------------------------

Released 2025-10-31

Enhancements & New Features 

 * Updated support for multiple operating systems

   The connector now supports the following operating systems:
   - macOS 15ARM
   - RHEL 8, RHEL 8ARM, RHEL10
   - Debian 13
      
   For a list of supported versions, see the Installation and Configuration
   Guide.

 * Updated third-party libraries

   The connector now uses the following third-party libraries:
   - Expat 2.7.3 (previously 2.6.3)   
   - ICU 74.2 (previously 71.1.x)
   - OpenSSL 3.0.18 (previously 3.0.16)


2.7.7 ------------------------------------------------------------------------

Released 2025-04-11

Enhancements & New Features 

 * Updated third-party libraries

   The connector now uses the following third-party libraries:
   - Expat 2.7.1 (previously 2.6.3)   
   - OpenSSL 3.0.16 (previously 3.0.15) 

 * Updated Cassandra version support
   
   The connector now supports Apache Cassandra versions 4.0 through 5.0. For a
   list of supported Cassandra versions, see the Installation and 
   Configuration Guide.

 * Upgraded Windows Server support

   The connector now uses Windows Server 2025. For a list of supported 
   versions, see the Installation and Configuration Guide.


Resolved Issues
The following issue has been resolved in Simba Cassandra ODBC Connector 2.7.7.

 * [CASSO-1070] For null table name value in the Catalog function, the latest 
   connector returned it as an empty string.


2.7.6 ------------------------------------------------------------------------

Released 2024-09-25

Enhancements & New Features 

 * Updated third-party libraries

   The connector now uses the following third-party libraries:
   - Expat 2.6.3 (previously 2.6.2)   
   - OpenSSL 3.0.15 (previously 3.0.13) 


Resolved Issues
The following issue has been resolved in Simba Cassandra ODBC Connector 2.7.6.

 * The connector returns incorrect values for the Inet data type when compared
   with older versions.


2.7.5 ------------------------------------------------------------------------

Released 2024-08-14

Enhancements & New Features 

 * Security improvement
   
   The connector has been updated with security improvements.

 * Upgraded libuv support

   The connector now uses libuv 1.48.0 version. Previously, the connector used
   1.38.1 version.
   

2.7.4 ------------------------------------------------------------------------

Released 2024-05-24

Enhancements & New Features 

 * Upgraded Visual Studio support

   The connector now uses Windows Visual Studio 2022. For supported versions,
   see the Installation and Configuration Guide.

 * Updated support for multiple operating systems

   The connector now supports the following operating systems:
   - Debian 11
   - macOS 11 and 12
   - RHEL 8
   - Ubuntu 22.04 and 24.04

   For a list of supported versions, see the Installation and Configuration
   Guide.

 * Updated third-party libraries

   The connector now uses the following third-party libraries:
   - Expat 2.6.2 (previously 2.5.0)
   - OpenSSL 3.0.13 (previously 3.0.11) 
   - Zlib 1.3.1 (previously 1.2.13)

 * Updated security checks

   The following compiler and linker flags have been used to improve security
   checks in the connector:  
   - /CETCOMPAT
   - /Qspectre

 * Updated non-required connection parameters

   Some of the non-required connection parameters are no longer supported. For
   more information, see the Workflow changes section.

 * Updated FIPS support 

   You can now enable FIPS support by downloading a separate FIPS package 
   available for assistance. For more information, see the Installation and
   Configuration Guide.
  
    
2.7.3 ------------------------------------------------------------------------

Released 2023-10-03

Enhancements & New Features 

 * Updated third-party libraries

   The connector now uses the following third-party libraries:
   - CPP 2.17.0 (previously 2.16.2) 
   - OpenSSL 3.0.11 (previously 3.0.8) 

 * Updated macOS support
   
   On macOS, the connector is now a Universal driver that natively supports 
   Apple Silicon. For security best practices, it is suggested to keep both
   the connector and OS updated. 
 

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