anchor.diff:    if (urlRegionServer != null) {
     %>
     <td>
  -     <a href="<%= urlRegionServer %>"><%= StringEscapeUtils.escapeHtml4(addr.getHostname().toString()) + ":" + master.getRegionServerInfoPort(addr) %></a>
  +     <a href="<%= urlRegionServer %>"><%= addr == null? "-": StringEscapeUtils.escapeHtml4(addr.getHostname().toString()) + ":" + master.getRegionServerInfoPort(addr) %></a>
     </td>
     <%
     } else {
  
positive.code:     %><%= StringEscapeUtils.escapeHtml4(element.toString()) %><%
    }
  } finally {
    admin.close();
  }
  } // end else
  %>
  
negative.code:   </tr>
    <tr>
        <td>Enabled</td>
        <td><%= admin.isTableEnabled(table.getName()).get() %></td>
        <td>Is the table enabled</td>
    </tr>
    <tr>
  