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 {
		if maxCnt < count {
			maxCnt = count
			dataDir = ddir
		}
	}

	if maxCnt >= writeQuorum {
		return dataDir
	}

	return ""
}

	notFoundMetaErrs, nonActionableMetaErrs := danglingMetaErrsCount(errs)

	notFoundPartsErrs, nonActionablePartsErrs := 0, 0
	for _, dataErrs := range dataErrsByPart {
		if nf, na := danglingPartErrsCount(dataErrs); nf > notFoundPartsErrs {
			notFoundPartsErrs, nonActionablePartsErrs = nf, na
		}
	}

	for _, m := range metaArr {
		if m.IsValid() {
			validMeta = m

			return nil
		})
		if err != nil {
			return err
		}

		if foundObjects && globalIsErasure {
			// If we found an object in erasure mode, we skip subdirs (only datadirs)...
			break
		}

		// If we have many subfolders, compact ourself.
		shouldCompact := f.newCache.Info.Name != folder.name &&
			len(existingFolders)+len(newFolders) >= dataScannerCompactAtFolders ||

		metaArr          []FileInfo
		errs             []error
		dataErrs         map[int][]int
		expectedMeta     FileInfo
		expectedDangling bool
	}{
		{
			name: "FileInfoExists-case1",
			metaArr: []FileInfo{
				{},
				{},
				fi,
				fi,
			},
			errs: []error{
				errFileNotFound,
				errDiskNotFound,
				nil,
				nil,
			},
			dataErrs:         nil,
			expectedMeta:     fi,

			if verifyErr != nil {
				dataErrsByPart[p][i] = convPartErrToInt(verifyErr)
			} else {
				dataErrsByPart[p][i] = verifyResp.Results[p]
			}
		}
	}

	// Build dataErrs by disk from dataErrs by part
	for part, disks := range dataErrsByPart {
		for disk := range disks {
			dataErrsByDisk[disk][part] = dataErrsByPart[part][disk]
		}
	}
	return

}

// GetDataDir returns an expected dataDir given FileInfo
//   - deleteMarker returns "delete-marker"
//   - returns "legacy" if FileInfo is XLV1 and DataDir is
//     empty, returns DataDir otherwise
//   - returns "dataDir"
func (fi FileInfo) GetDataDir() string {
	if fi.Deleted {
		return "delete-marker"
	}
	if fi.XLV1 && fi.DataDir == "" {
		return "legacy"
	}
	return fi.DataDir
}

	}{
		{ // transitioned object version
			xlmeta: xlMetaV2Object{
				VersionID: vID,
				DataDir:   dataDir,
				MetaSys:   transitioned,
			},
			uses: false,
		},
		{ // to be restored (requires object version to be transitioned)
			xlmeta: xlMetaV2Object{
				VersionID: vID,
				DataDir:   dataDir,
				MetaSys:   transitioned,
				MetaUser:  toBeRestored,
			},
			uses: false,
		},

		case "VersionID":
			z.VersionID, err = dc.ReadString()
			if err != nil {
				err = msgp.WrapError(err, "VersionID")
				return
			}
		case "DataDir":
			z.DataDir, err = dc.ReadString()
			if err != nil {
				err = msgp.WrapError(err, "DataDir")
				return
			}
		default:
			err = dc.Skip()
			if err != nil {
				err = msgp.WrapError(err)
				return
			}
		}
	}

		}
	}
	partsMetadata[0] = partsMetadataBackup // Revert before going to the next test

	// Test 3: Not synchronized DataDir
	erasureDisks = s.getDisks()
	partsMetadataBackup = partsMetadata[1]
	partsMetadata[1].DataDir = "foo-random"

	errs = make([]error, len(erasureDisks))
	_, _ = checkObjectWithAllParts(ctx, erasureDisks, partsMetadata,

		}
	}
}

func TestFindFileInfoInQuorum(t *testing.T) {
	getNFInfo := func(n int, quorum int, t int64, dataDir string, succModTimes []time.Time, numVersions []int) []FileInfo {
		fi := newFileInfo("test", 8, 8)
		fi.AddObjectPart(1, "etag", 100, 100, UTCNow(), nil, nil)
		fi.ModTime = time.Unix(t, 0)
		fi.DataDir = dataDir
		fis := make([]FileInfo, n)
		for i := range fis {
			fis[i] = fi
			fis[i].Erasure.Index = i + 1