in flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/CassandraSink.java [323:336]
public CassandraSinkBuilder<IN> setHost(final String host, final int port) {
if (this.builder != null) {
throw new IllegalArgumentException(
"Builder was already set. You must use either setHost() or setClusterBuilder().");
}
this.builder =
new ClusterBuilder() {
@Override
protected Cluster buildCluster(Cluster.Builder builder) {
return builder.addContactPoint(host).withPort(port).build();
}
};
return this;
}