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]++
	}

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