// dataUsageCacheV2 contains a cache of data usage entries version 2.
type dataUsageCacheV2 struct {
	Info  dataUsageCacheInfo
	Cache map[string]dataUsageEntryV2
}

// dataUsageCacheV3 contains a cache of data usage entries version 3.
type dataUsageCacheV3 struct {
	Info  dataUsageCacheInfo
	Cache map[string]dataUsageEntryV3
}

// dataUsageCacheV4 contains a cache of data usage entries version 4.
type dataUsageCacheV4 struct {

out=$(diff -qpruN expanded_ns.txt decommissioned_ns.txt)
ret=$?
if [ $ret -ne 0 ]; then
	echo "BUG: expected no missing entries after decommission: $out"
	exit 1
fi

out=$(diff -qpruN expanded_ns_versions.txt decommissioned_ns_versions.txt)
ret=$?
if [ $ret -ne 0 ]; then
	echo "BUG: expected no missing entries after decommission: $out"
	exit 1
fi

go install -v github.com/minio/minio/docs/debugging/s3-check-md5@latest

```

Let's take for example a set of 12 compute nodes with an aggregate memory of _1.2TiB_, we need to do following settings for optimal results. Add the following optimal entries for _core-site.xml_ to configure _s3a_ with **MinIO**. Most important options here are

```
cat ${HADOOP_CONF_DIR}/core-site.xml | kv-pairify | grep "mapred"

		peerLocks []*PeerLocks
		expected  madmin.LockEntries
	}{
		{
			peerLocks: peerLocks,
			expected:  exp,
		},
	}

	// printEntries := func(entries madmin.LockEntries) {
	// 	for i, entry := range entries {
	// 		fmt.Printf("%d: %s %s %s %s %v %d\n", i, entry.Resource, entry.ID, entry.Owner, entry.Type, entry.ServerList, entry.Elapsed)
	// 	}
	// }

	}
	batchLen = batch.Len()
	if batchLen != 0 {
		t.Fatalf("expected batch to be empty but still left with %d items", batchLen)
	}
	// Add duplicate entries
	for i := 0; i < 10; i++ {
		if err := batch.Add(99, 99); err != nil {
			t.Fatalf("failed to add duplicate item %v to batch after Get; %v", i, err)
		}
	}
	if _, ok := batch.GetByKey(99); !ok {

	metacacheMaxRunningAge = time.Minute

	// Max time between client calls before dropping an async cache listing.
	metacacheMaxClientWait = 3 * time.Minute

	// metacacheBlockSize is the number of file/directory entries to have in each block.
	metacacheBlockSize = 5000

	// metacacheSharePrefix controls whether prefixes on dirty paths are always shared.
	// This will make `test/a` and `test/b` share listings if they are concurrent.

	}

	for k, v := range objInfo.UserMetadata {
		oi.UserDefined[k] = v
	}

	return oi
}

func (r BatchJobReplicateV1) writeAsArchive(ctx context.Context, objAPI ObjectLayer, remoteClnt *minio.Client, entries []ObjectInfo) error {
	input := make(chan minio.SnowballObject, 1)
	opts := minio.SnowballOptions{
		Opts:     minio.PutObjectOptions{},
		InMemory: *r.Source.Snowball.InMemory,
		Compress: *r.Source.Snowball.Compress,

	ctx := r.Context()

	objectAPI, _ := validateAdminReq(ctx, w, r, policy.TopLocksAdminAction)
	if objectAPI == nil {
		return
	}

	count := 10 // by default list only top 10 entries
	if countStr := r.Form.Get("count"); countStr != "" {
		var err error
		count, err = strconv.Atoi(countStr)
		if err != nil {
			writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
			return
		}

type BucketMetadataSys struct {
	objAPI ObjectLayer

	sync.RWMutex
	initialized bool
	metadataMap map[string]BucketMetadata
}

// Count returns number of bucket metadata map entries.
func (sys *BucketMetadataSys) Count() int {
	sys.RLock()
	defer sys.RUnlock()

	return len(sys.metadataMap)
}

// Remove bucket metadata from memory.
func (sys *BucketMetadataSys) Remove(buckets ...string) {

		entries = append(entries, name2)
	}
	if err := os.MkdirAll(filepath.Join(dir, "mydir"), 0o777); err != nil {
		t.Fatalf("Unable to create \"mydir\", %s", err)
	}
	entries = append(entries, "mydir/")

	// Keep entries sorted for easier comparison.
	sort.Strings(entries)

	// Add entries slice for this test directory.
	testResults = append(testResults, result{dir, entries})
	return testResults
}