private String getBucketId(String bucketName, List<String> clusterNodes) {
    return getClusterId(clusterNodes) + "-" + bucketName;
  }
Generate a unique bucketId given bucket name and cluster nodes.
samza-kv-couchbase/src/main/java/org/apache/samza/table/remote/couchbase/CouchbaseBucketRegistry.java