public List<Integer> getRegionIds() {
    return new ArrayList<>(regionStatisticsMap.keySet());
  }
Get the specified Region's status.

@param dataNodeId Where the Region resides
@return Region's latest status if received heartbeat recently, Unknown otherwise
iotdb-core/confignode/src/main/java/org/apache/iotdb/confignode/manager/load/cache/region/RegionGroupStatistics.java