private Delete createDeleteForIncrBackupTableSet(String backupRoot) {
    Delete delete = new Delete(rowkey(INCR_BACKUP_SET, backupRoot));
    delete.addFamily(BackupSystemTable.META_FAMILY);
    return delete;
  }
Creates Delete for incremental backup table set
@param backupRoot backup root
@return delete operation
hbase-backup/src/main/java/org/apache/hadoop/hbase/backup/impl/BackupSystemTable.java