g := errgroup.WithNErrs(len(storageDisks))
	for index, disk := range storageDisks {
		if disk == nil {
			continue
		}
		index := index
		g.Go(func() error {
			// Ignoring failure to remove parts that weren't present in CompleteMultipartUpload
			// requests. xl.meta is the authoritative source of truth on which parts constitute
			// the object. The presence of parts that don't belong in the object doesn't affect correctness.

			UserAgent:    r.UserAgent(),
			Host:         handlers.GetSourceIP(r),
		})
	}

	// Clean up transitioned objects from remote tier
	for _, os := range oss {
		if os == nil { // skip objects that weren't deleted due to invalid versionID etc.
			continue
		}
		os.Sweep()
	}
}

// PutBucketHandler - PUT Bucket
// ----------