hbase 判断列族是否存在

 public static boolean isExistColumnFamily(String tableName,String cf) throws IOException {
         if(isExistTable(tableName)) {
             Table table = conn.getTable(TableName.valueOf(tableName));
             TableDescriptor tableDescriptor = table.getDescriptor();
             ColumnFamilyDescriptor descriptor = tableDescriptor.getColumnFamily(Bytes.toBytes(cf));
             return descriptor==null?false:true;
         }else {
             return false;
         }
     }

     public static boolean isExistTable(String tableName) throws IOException {
         return admin.tableExists(TableName.valueOf(tableName));
     }