@Override
  public String toString() {
    Joiner.MapJoiner mapJoiner = Joiner.on(',').withKeyValueSeparator("=");
    return "NamespaceTableAndRegionInfo [name=" + name + ", tableAndRegionInfo="
      + mapJoiner.join(tableAndRegionInfo) + "]";
  }
Gets the total number of regions in namespace.
@return the region count
hbase-server/src/main/java/org/apache/hadoop/hbase/namespace/NamespaceTableAndRegionInfo.java