ctx, cancel := context.WithCancel(ctx)
		// one of source/target is s3, skip delete marker and all versions under the same object name.
		s3Type := r.Target.Type == BatchJobReplicateResourceS3 || r.Source.Type == BatchJobReplicateResourceS3

		if err := api.Walk(ctx, r.Source.Bucket, r.Source.Prefix, walkCh, WalkOptions{
			Marker:   lastObject,
			Filter:   selectObj,
			AskDisks: walkQuorum,
		}); err != nil {