public String next() {
Entry<Key,Value> next = scanner.next();
if (next.getKey().getColumnFamily().equals(SPAN_CF)) {
StringBuilder result = new StringBuilder();
SimpleDateFormat dateFormatter = new SimpleDateFormat(DATE_FORMAT);
RemoteSpan span = getRemoteSpan(next);
result.append("----------------------\n");
result.append(String.format(" %12s:%s%n", "name", span.description));
result.append(String.format(" %12s:%s%n", "trace", Long.toHexString(span.traceId)));
result.append(String.format(" %12s:%s%n", "loc", span.svc + "@" + span.sender));
result.append(String.format(" %12s:%s%n", "span", Long.toHexString(span.spanId)));