Upgrading from 3.2.x

The 3.3 release is binary and source compatible with the 3.2 release except for methods that have been added to interfaces that have been marked as unstable.

Upgrading from 2.x

Please see the Upgrading guide in the 3.0 driver reference documentation.

System Requirements

The minimum JVM is now Java 6: however, specific features require Java 7:

• SSL support requires Java 7 in order to perform host name verification, which is enabled by default. See below and on SSL for details on how to disable host name verification.
• The asynchronous API requires Java 7, as by default it relies on AsynchronousSocketChannel for its implementation. See Async for details on configuring the driver to use Netty instead.