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