private String clientRequestMeterName(String clientIP) {
      // Extract meter name containing the client IP
      if (clientIP.isEmpty()) {
        return "";
      }
      return String.format("MetaTable_client_%s_lossy_request", clientIP);
    }
Get regionId from Ops such as: get, put, delete.
@param op such as get, put or delete.
hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/MetaTableMetrics.java