func getRandomRange(min, max int, seed int64) int {
	// special value -1 means no explicit seeding.
	if seed != -1 {
		rand.Seed(seed)
	}
	return rand.Intn(max-min) + min
}

// Randomizes the order of bytes in the byte array
// using Knuth Fisher-Yates shuffle algorithm.
func randomizeBytes(s []byte, seed int64) []byte {
	// special value -1 means no explicit seeding.

		} else { // part of header can be accommodated
			r.opts.HeaderSize -= b - 1
			need = 1 // to ensure we read at least one byte for every Read
			tokens = b
		}
	} else { // all tokens go towards payload
		need = int(math.Min(float64(b), float64(need)))
		tokens = need
	}

	err = r.throttle.WaitN(r.ctx, tokens)
	if err != nil {
		return
	}

	n, err = r.r.Read(buf[:need])
	if err != nil {

			timeout.LogFailure()
		} else {
			timeout.LogSuccess(duration)
		}
	}
}

func TestDynamicTimeoutAdjustExponential(t *testing.T) {
	timeout := newDynamicTimeout(time.Minute, time.Second)

	rand.Seed(0)

	initial := timeout.Timeout()

	for try := 0; try < 10; try++ {
		testDynamicTimeoutAdjust(t, timeout, rand.ExpFloat64)
	}

	adjusted := timeout.Timeout()
	if initial <= adjusted {

		}
		// Look for 'crossdomain.xml' in the incoming request.
		if r.URL.Path == crossDomainXMLEntity {
			// Write the standard cross domain policy xml.
			w.Write([]byte(cxml))
			// Request completed, no need to serve to other handlers.
			return
		}
		h.ServeHTTP(w, r)
	})

			lk4ch <- nsLk.lock(ctx, "volume", "path", "source", "opsID", false, 0)
		}()
		runtime.Gosched()

		// unlock the manual lock
		nsLk.lockMapMutex.Unlock()

		// To trigger the race:
		// 1) lk3 or lk4 need to advance and increment the ref on the existing resource,
		//    successfully acquiring the lock.
		// 2) lk2 then needs to advance and remove the resource from lockMap.

	if err := api.Walk(ctx, r.Bucket, r.Prefix, results, WalkOptions{
		Marker:       lastObject,
		LatestOnly:   false, // we need to visit all versions of the object to implement purge: retainVersions
		VersionsSort: WalkVersionsSortDesc,
	}); err != nil {
		// Do not need to retry if we can't list objects on source.
		return err
	}

	// Goroutine to periodically save batch-expire job's in-memory state

			for _, kv := range r.Flags.Filter.Metadata {
				for k, v := range info.Metadata {
					if !stringsHasPrefixFold(k, "x-amz-meta-") && !isStandardHeader(k) {
						continue
					}
					// We only need to match x-amz-meta or standardHeaders
					if kv.Match(BatchJobKV{Key: k, Value: v}) {
						return true
					}
				}
			}

			// None of the provided metadata filters match skip the object.

		}

		if opts.Trace != nil {
			opts.Trace(fmt.Sprint("adding listener to ", l.Addr()))
		}

		listeners = append(listeners, l)
	}

	if len(listeners) == 0 {
		// No listeners initialized, no need to continue
		return
	}

	listener = &httpListener{
		listeners: listeners,
		acceptCh:  make(chan acceptResult, len(listeners)),
		opts:      opts,
	}

	return ceilFrac(e.BlockSize, int64(e.DataBlocks))
}

// IsValid - tells if erasure info fields are valid.
func (fi FileInfo) IsValid() bool {
	if fi.Deleted {
		// Delete marker has no data, no need to check
		// for erasure coding information
		return true
	}
	dataBlocks := fi.Erasure.DataBlocks
	parityBlocks := fi.Erasure.ParityBlocks
	correctIndexes := (fi.Erasure.Index > 0 &&

				if err != nil {
					host = r.Host
				}
				// Make sure to skip matching minio.<domain>` this is
				// specifically meant for operator/k8s deployment
				// The reason we need to skip this is for a special
				// usecase where we need to make sure that
				// minio.<namespace>.svc.<cluster_domain> is ignored
				// by the bucketDNS style to ensure that path style
				// is available and honored at this domain.
				//