public static MetricsInfo info(String name, String description) {
    Map<String, MetricsInfo> map = infoCache.getUnchecked(name);
    MetricsInfo info = map.get(description);
    if (info == null) {
      info = new MetricsInfoImpl(name, description);
      map.put(description, info);
    }
    return info;
  }
Get a metric info object
@return an interned metric info object
hbase-hadoop-compat/src/main/java/org/apache/hadoop/hbase/metrics/Interns.java