public static List<ColumnFamilyDescriptor> getMobColumnFamilies(TableDescriptor htd) {

    List<ColumnFamilyDescriptor> fams = new ArrayList<ColumnFamilyDescriptor>();
    ColumnFamilyDescriptor[] hcds = htd.getColumnFamilies();
    for (ColumnFamilyDescriptor hcd : hcds) {
      if (hcd.isMobEnabled()) {
        fams.add(hcd);
      }
    }
    return fams;
  }
Get list of Mob column families (if any exists)
@param htd table descriptor
@return list of Mob column families
hbase-server/src/main/java/org/apache/hadoop/hbase/mob/MobUtils.java