public function select($table, $row, $column = null, $filter = "")
 {
     $tscan_params = array();
     if (!empty($filter)) {
         MMB::debug(" filter = {$filter} ## <br>");
         $tscan_params["filterString"] = $filter;
     }
     $scan = new \TScan($tscan_params);
     $scanner = $this->_hbaseclient->scannerOpenWithScan("{$table}", $scan);
     $res = array();
     $idx = 0;
     while ($row = $this->_hbaseclient->scannerGet($scanner)) {
         $row = $row[0];
         $res[$idx]["rowkey"] = $row->row;
         foreach ($row->columns as $qualifier => $cell) {
             $column_name = preg_replace("/^[\\w]+:/", "", $qualifier);
             $res[$idx][$column_name] = $cell->value;
         }
         $idx++;
     }
     return $res;
 }