return []byte{}
}

// figure out the most commonVersions across disk that satisfies
// the 'writeQuorum' this function returns '0' if quorum cannot
// be achieved and disks have too many inconsistent versions.
func reduceCommonDataDir(dataDirs []string, writeQuorum int) (dataDir string) {
	dataDirsCount := make(map[string]int)
	for _, ddir := range dataDirs {
		dataDirsCount[ddir]++
	}

	max := 0
	for ddir, count := range dataDirsCount {

				continue
			}
			if !bytes.Equal(dversions, versions) {
				if len(dversions) > len(versions) {
					versions = dversions
				}
				break
			}
		}
		dataDir = reduceCommonDataDir(dataDirs, writeQuorum)
	}

	// We can safely allow RenameData errors up to len(er.getDisks()) - writeQuorum
	// otherwise return failure.
	return evalDisks(disks, errs), versions, dataDir, err
}