@Override
  public DrillDownInfo drillDown(Record selectedRecord) {
    List<RecordFilter> initialFilters = Collections.singletonList(RecordFilter
      .newBuilder(Field.REGION_SERVER).doubleEquals(selectedRecord.get(Field.REGION_SERVER)));
    return new DrillDownInfo(Mode.REGION, initialFilters);
  }
Implementation for {@link ModeStrategy} for RegionServer Mode.
hbase-hbtop/src/main/java/org/apache/hadoop/hbase/hbtop/mode/RegionServerModeStrategy.java