anchor.diff:    import="org.apache.hadoop.hbase.master.http.MetaBrowser"
     import="org.apache.hadoop.hbase.master.http.RegionReplicaInfo"
     import="org.apache.hadoop.hbase.quotas.QuotaSettingsFactory"
  -  import="org.apache.hadoop.hbase.quotas.QuotaTableUtil"%>
  +  import="org.apache.hadoop.hbase.quotas.QuotaTableUtil"
  +  import="org.apache.hadoop.hbase.NotAllMetaRegionsOnlineException" %>
   <%@ page import="org.apache.hadoop.hbase.quotas.SpaceQuotaSnapshot" %>
   <%@ page import="org.apache.hadoop.hbase.quotas.ThrottleSettings" %>
   <%@ page import="org.apache.hadoop.hbase.util.Bytes" %>
  
positive.code:            for (int j = 0; j < numMetaReplicas; j++) {
               RegionInfo meta = RegionReplicaUtil.getRegionInfoForReplica(
                                       RegionInfoBuilder.FIRST_META_REGIONINFO, j);
               ServerName metaLocation = MetaTableLocator.waitMetaRegionLocation(master.getZooKeeper(), j, 1);
               for (int i = 0; i < 1; i++) {
                 String hostAndPort = "";
                 float locality = 0.0f;
                 float localityForSsd = 0.0f;
  
negative.code:           for (int j = 0; j < numMetaReplicas; j++) {
              RegionInfo meta = RegionReplicaUtil.getRegionInfoForReplica(
                                      RegionInfoBuilder.FIRST_META_REGIONINFO, j);
              //If a metaLocation is null, All of its info would be empty here to be displayed.
              ServerName metaLocation = null;
              try {
                metaLocation = MetaTableLocator.waitMetaRegionLocation(master.getZooKeeper(), j, 1);
              } catch (NotAllMetaRegionsOnlineException e) {
                //Region in transition state here throw a NotAllMetaRegionsOnlineException causes
                //the UI crash.
              }
              for (int i = 0; i < 1; i++) {
                //If metaLocation is null, default value below would be displayed in UI.
                String hostAndPort = "";
                String readReq = "N/A";
                String writeReq = "N/A";
  