private String[] cellValueToBackupSet(Cell current) {
    byte[] data = CellUtil.cloneValue(current);
    if (!ArrayUtils.isEmpty(data)) {
      return Bytes.toString(data).split(",");
    }
    return new String[0];
  }
Converts cell to backup set list.
@param current current cell
@return backup set as array of table names
hbase-backup/src/main/java/org/apache/hadoop/hbase/backup/impl/BackupSystemTable.java