DataStax Java driver 2.0.0-beta2 with Cassandra 1.2.1: unsupported protocol version

Question

I'm wondering if com.datastax.cassandra:cassandra-driver-core:2.0.0-beta2 can be used with org.apache.cassandra:cassandra-all:1.2.1. I'm using cassandra-maven-plugin:1.2.1-1 (which uses org.apache.cassandra:cassandra-all:1.2.1), adding

start_native_transport: true
native_transport_port: ${cassandra.nativePort}

to the yaml plugin property. I can telnet to the port successfully.

However, when I attempt to connect via the following code,

// Ports.NATIVE has the same value as "${cassandra.nativePort}" above
Cluster cluster = Cluster.builder().addContactPoint("127.0.0.1")
    .withPort(Ports.NATIVE).build();
Session session = cluster.connect();

I get the following exception:

com.datastax.driver.core.exceptions.NoHostAvailableException: All host(s) tried for query failed (tried: /127.0.0.1 (com.datastax.driver.core.ConnectionException: [/127.0.0.1] Unexpected error during transport initialization (com.datastax.driver.core.TransportException: [/127.0.0.1] Unexpected exception triggered (com.datastax.driver.core.exceptions.DriverInternalError: Server response from unsupported protocol version: 1))))
    at com.datastax.driver.core.ControlConnection.reconnectInternal(ControlConnection.java:179)
    at com.datastax.driver.core.ControlConnection.connect(ControlConnection.java:77)
    at com.datastax.driver.core.Cluster$Manager.init(Cluster.java:868)
    at com.datastax.driver.core.Cluster$Manager.newSession(Cluster.java:888)
    at com.datastax.driver.core.Cluster$Manager.access$200(Cluster.java:792)
    at com.datastax.driver.core.Cluster.connect(Cluster.java:155)

I think the crux of it is Server response from unsupported protocol version: 1.

Does this mean that the 2.0.0-beta2 driver can't be used with Cassandra 1.2.1? Where is the driver/server compatibility matrix?

I've already burned almost a day on this.

Thanks, Matthew

Answer 1

Yes, it's incompatible. From the java-driver 2.0 requirements:

The driver uses Casandra's native protocol, and this version 2.0 uses the second version of that protocol. As such, this version of the driver requires a version of Cassandra greater than or equal to 2.0 (for Cassandra 1.2 please use the version 1.0 of the driver).

Try downgrading to 1.0, latest version is 1.0.4:

<dependency>
  <groupId>com.datastax.cassandra</groupId>
  <artifactId>cassandra-driver-parent</artifactId>
  <version>1.0.4</version>
</dependency>