Upgrade guide


The coordinates of the driver artifacts have changed:

  • core DSE driver: com.datastax.dse:dse-java-driver-core
  • Apache Tinkerpop integration: com.datastax.dse:dse-java-driver-graph

DSE-specific versions of the mapper and extras are now published:

  • com.datastax.dse:dse-java-driver-mapping
  • com.datastax.dse:dse-java-driver-extras

The SSLOptions interface is now deprecated in favor of RemoteEndpointAwareSSLOptions. Similarly, the two existing implementations of that interface, JdkSSLOptions and NettySSLOptions, are now deprecated in favor of RemoteEndpointAwareJdkSSLOptions and RemoteEndpointAwareNettySSLOptions respectively (see JAVA-1364).

In 1.1, the driver would log a warning the first time it would skip a retry for a non-idempotent request; this warning has now been removed as users should now have adjusted their applications accordingly.

The caseSensitive field on @Column and @Field annotation now only applies to the name field on the annotation and not the name of the variable / method itself. If you were previously depending on the name of the field, you should add a name field to the annotation, i.e.: @Column(name="userName", caseSensitive=true).

cassandra-driver-dse-* to dse-driver-1.0.0

For previous versions of DSE, the driver extensions were published as a module of the core driver, under the coordinates com.datastax.cassandra:cassandra-driver-dse. Starting with DSE 5, they become a standalone project: com.datastax.cassandra:dse-driver. By separating the two projects, our goal is to allow separate lifecycles (for example, we can release a patch version only for dse-driver if no core changes are needed).

In addition, we are switching to semantic versioning for the new project: each release number will now clearly express the nature of the changes it contains (patches, new features or breaking changes). Since version numbers are strictly codified by semver, following DSE server versioning is not possible; to make it clear that the two versioning schemes are independent, we start the new driver project at 1.0.0.

From an API perspective, dse-driver brings the following changes:

Dedicated cluster and session wrappers

The DSE driver now uses dedicated extensions of the core driver types: DseCluster and DseSession. Their main advantage is to allow direct execution of graph statements.

See the root section of the manual for more details.

Retries of idempotent statements

Historically, the driver retried failed queries indiscriminately. In recent versions of the core driver, the Statement#isIdempotent flag was introduced, to mark statements that are unsafe to retry when there is a chance that they might have been applied already by a replica. To keep backward compatibility with previous versions, the driver still retried these statements by default, and you had to configure a special retry policy to avoid retrying them.

Starting with dse-driver-1.0.0, it is now the default behavior to not retry non-idempotent statements on write timeouts or request errors. To help with the transition, a warning will be logged when the driver initializes, and the first time a retry is aborted because of the isIdempotent flag (this warning will be removed in a future version).

Note that the driver does not position the isIdempotent flag automatically. Because it does not parse query strings, it cannot determine if a particular query is idempotent or not. Therefore it takes a cautious approach and marks all statements as non-idempotent by default. It is up to you to set the flag in your code if you know that your queries are safe to retry.

Note that this behavior will also become the default in version 3.1.0 of the core driver.