Check that if Embedded Cassandra is already running that don't start a new instance about embedded-cassandra HOT 1 CLOSED

public class CassandraInstance {

	private static volatile Cassandra cassandra;

	public Cassandra getOrCreate() {
		Cassandra cassandra = CassandraInstance.cassandra;
		if(cassandra==null){
			synchronized (this){
				cassandra = CassandraInstance.cassandra;
				if(cassandra==null){
					cassandra = new EmbeddedCassandraFactory().create();
					cassandra.start();
					CassandraInstance.cassandra = cassandra;
				}
			}
		}
		return cassandra;
	}

}