presto-raptor-legacy/src/main/java/io/prestosql/plugin/raptor/legacy/backup/ManagedBackupStore.java/ManagedBackupStore/backupShard
class ManagedBackupStore:    @Override
    public void backupShard(UUID uuid, File source)
    {
        log.debug("Creating shard backup: %s", uuid);
        backupShard.run(() -> store.backupShard(uuid, source));
    }