protected override Task RunAsync(CancellationToken cancellationToken)
 {
     try
     {
         return(Task.WhenAll(_backupManager.PeriodicTakeBackupAsync(cancellationToken, Partition)));
     }
     catch (Exception e)
     {
         ServiceEventSource.Current.ServiceMessage(Context, "RunAsync failed, {0}", e);
         throw;
     }
 }