SkipRebalancing:   true, // make sure we skip the decommissioned pool
							NoAuditLog:        true,
						})
					var failure bool
					if err != nil && !isErrObjectNotFound(err) && !isErrVersionNotFound(err) {
						rebalanceLogIf(ctx, err)
						failure = true
					}

					if !failure {
						z.updatePoolStats(poolIdx, bucket, version)
						rebalanced++
					}

			size:       4,
			actualSize: 4,
		},
		{
			desc:       "Failure md5 mismatch.",
			src:        bytes.NewReader([]byte("abcd")),
			size:       4,
			actualSize: 4,
			md5hex:     "d41d8cd98f00b204e9800998ecf8427f",
			err: BadDigest{
				"d41d8cd98f00b204e9800998ecf8427f",
				"e2fc714c4727ee9395f324cd2e7f331f",
			},
		},
		{
			desc:       "Failure sha256 mismatch.",
			src:        bytes.NewReader([]byte("abcd")),

// it returns false only if there is a conversion failure.
func (v Value) bytesToInt() (int64, bool) {
	bytes, _ := v.ToBytes()
	i, err := strconv.ParseInt(strings.TrimSpace(string(bytes)), 10, 64)
	return i, err == nil
}

// Converts untyped value into float. The bool return implies success
// - it returns false only if there is a conversion failure.
func (v Value) bytesToFloat() (float64, bool) {

      result of this License or out of the use or inability to use the
      Work (including but not limited to damages for loss of goodwill,
      work stoppage, computer failure or malfunction, or any and all
      other commercial damages or losses), even if such Contributor
      has been advised of the possibility of such damages.

type BucketRemoteTargetNotFound GenericError

func (e BucketRemoteTargetNotFound) Error() string {
	return "Remote target not found: " + e.Bucket
}

// RemoteTargetConnectionErr remote target connection failure.
type RemoteTargetConnectionErr struct {
	Err       error
	Bucket    string
	Endpoint  string
	AccessKey string
}

func (e RemoteTargetConnectionErr) Error() string {
	if e.Bucket != "" {

	207, 151, 211, 146, // message crc.
}

// newErrorMessage - creates new Request Level Error Message. S3 sends this message if the request failed for any reason.
// It contains the error code and error message for the failure. If S3 sends a RequestLevelError message,
// it doesn't send an End message.
//
// Header specification:
// Request-level error messages contain three headers, as follows:

							NoAuditLog:         true,
						})
					var failure bool
					if err != nil {
						if isErrObjectNotFound(err) || isErrVersionNotFound(err) {
							err = nil
						}
					}
					stopFn(err)
					if err != nil {
						decomLogIf(ctx, err)
						failure = true
					}
					z.poolMetaMutex.Lock()
					z.poolMeta.CountItem(idx, 0, failure)
					z.poolMetaMutex.Unlock()
					if !failure {

}

type tierMetrics struct {
	sync.RWMutex  // protects requestsCount only
	requestsCount map[string]struct {
		success int64
		failure int64
	}
	histogram *prometheus.HistogramVec
}

var globalTierMetrics = tierMetrics{
	requestsCount: make(map[string]struct {
		success int64
		failure int64
	}),
	histogram: prometheus.NewHistogramVec(prometheus.HistogramOpts{
		Name:    "tier_ttlb_seconds",

		}
		if checkCopyObjectPartPreconditions(ctx, w, r, o) {
			return true
		}
		if parseRangeErr != nil {
			writeCopyPartErr(ctx, w, parseRangeErr, r.URL)
			// Range header mismatch is pre-condition like failure
			// so return true to indicate Range precondition failed.
			return true
		}
		return false
	}
	getOpts.CheckPrecondFn = checkCopyPartPrecondFn

			false,
		},
	}

	// Valid all test cases.
	for i, testCase := range testCases {
		if err := checkFormatErasureValue(testCase.format, nil); err != nil && testCase.success {
			t.Errorf("Test %d: Expected failure %s", i+1, err)
		}
	}
}

// Tests getFormatErasureInQuorum()
func TestGetFormatErasureInQuorumCheck(t *testing.T) {
	setCount := 2
	setDriveCount := 16