@Override
  public String toString() {
    return new ToStringBuilder(this, ToStringStyle.NO_CLASS_NAME_STYLE)
      .append("tableName", tableName).append("region", region).append("columnFamily", columnFamily)
      .append("hfilePath", hfilePath).append("rowKey", rowKey).toString();
  }
The data corresponding to a single bulk-loaded file that is being tracked by the backup logic.
hbase-backup/src/main/java/org/apache/hadoop/hbase/backup/impl/BulkLoad.java