An asterisk (*) indicates support that was added in a hotfix or software patch subsequent to a release.

Refer to the following resources for additional information:

• Product Compatibility Guide: Provides the latest data source and platform support information. 
• Fixes: Describes the issues resolved since general availability.  

Version 6.0.0

ENHANCEMENTS

• The driver has been enhanced to support user impersonation with Kerberos authentication using the new ImpersonateUser connection property. Refer to the ImpersonateUser property for more information.
• The driver has been enhanced to support the Array data type through data type inference. For details, refer to Data Types.
• The driver has been enhanced to support proxy server connections. Refer to the Proxy server for more information.
• The driver has been enhanced to support LDAP authentication with user ID and password. Refer to the User ID and password authentication for more information.
• The driver supports Kerberos authentication. Refer to the Kerberos authentication for more information.
• The driver supports "No authentication," which allows you to connect without any authentication credentials. Refer to the No authentication for more information.

CHANGED BEHAVIOR

• The default authentication method used by the driver has been updated to user ID/password authentication (AuthenticationMethod=userIdPassword). See User ID and password authentication for details.

Version 5.1.4

ENHANCEMENTS

• The driver has been enhanced to include timestamp in the Spy and JDBC packet
  logs by default. If required, you can disable the timestamp logging by
  specifying the following at connection: For Spy logs, set
  spyAttributes=(log=(file)Spy.log;timestamp=no) and for JDBC packet logs,
  set ddtdbg.ProtocolTraceShowTime=false.
• Interactive SQL for JDBC (JDBCISQL) is now installed with the product. JDBCISQL is a command-line interface that supports connecting your driver to a data source, executing SQL statements and retrieving results in a terminal. This tool provides a method to quickly test your drivers in an environment that does not support GUIs.*
• The driver has been enhanced to support SSL data encryption. Refer to the readme for more information.*
• The driver has been enhanced to support the Char and Vachar data type with
  Impala 2.1 and higher. For details, refer to Data Types.
• Support for result set holdability has been added to the driver.

CHANGED BEHAVIOR

• The driver no longer registers the Statement Pool Monitor as a JMX MBean by
  default. To register the Statement Pool Monitor and manage statement pooling with
  standard JMX API calls, the new RegisterStatementPoolMonitorMBean connection
  property must be set to true. For details, refer to RegisterStatementPoolMonitorMBean.*

Version 5.1.3

GA Release Features

• Supports SQL read-write access to Cloudera Impala
• Includes the TransactionMode connection property which allows you to configure the driver to report that it supports transactions, even though Hive does not support transactions. This provides a workaround for applications which do not operate with a driver that reports transactions are not supported.
• Support for connection pooling