We've seen that Titan supports different storage backends. Exploring all three options is beyond the scope of this chapter (you can learn more about Titan and its configuration options at http://thinkaurelius.github.io/titan/), so we will focus on using the Cassandra (http://cassandra.apache.org) storage backend.
In order to download and run Cassandra, we need to execute the following commands:
wget http://www.apache.org/dyn/closer.cgi?path=/cassandra/1.2.9/apache-cassandra-1.2.9-bin.tar.gz tar -zxf ./cassandra-1.2.9.bin.tar.gz cd cassandra-1.2.9 ./bin/cassandra -f
The default file that comes with the Cassandra distribution will create a single-node Cassandra database running locally. If there is an error during the startup, you may need to configure Cassandra by editing the ${CASSANDRA_HOME}/conf/cassandra.yaml and/or ${CASSANDRA_HOME}/conf/log4j-server.properties files. The most common problems are usually related...