return true, nil
					}
					return false, err
				}
				err = d.deserialize(r)
				r.Close()
				return err != nil, nil
			case InsufficientReadQuorum, StorageErr:
				return true, nil
			}
			return false, err
		}
		err = d.deserialize(r)
		r.Close()
		return err != nil, nil
	}

	// Caches are read+written without locks,
	retries := 0
	for retries < 5 {

	if err = replicationConfig.Validate(bucket, sameTarget); err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}
	configData, err := xml.Marshal(replicationConfig)
	if err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}
	if _, err = globalBucketMetadataSys.Update(ctx, bucket, bucketReplicationConfig, configData); err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)

			"SELECT * FROM `users` FOR UPDATE", nil,
		},
		{
			[]clause.Interface{clause.Select{}, clause.From{}, clause.Locking{Strength: clause.LockingStrengthShare, Table: clause.Table{Name: clause.CurrentTable}}},
			"SELECT * FROM `users` FOR SHARE OF `users`", nil,
		},
		{

		bytebufferpool.Put(b)
		bytebufferpool.Put(bc)
	}()

	w, err := zstd.NewWriter(bc)
	if err != nil {
		return nil, nil, err
	}

	if _, err = io.Copy(w, io.TeeReader(reader, b)); err != nil {
		return nil, nil, err
	}

	w.Close()
	return bc.Bytes(), b.Bytes(), nil
}

const (
	// Update this whenever the official minisign pubkey is rotated.

			err := test.sizeFilter.Validate()
			if err != nil {
				gotErr := err.(BatchJobYamlErr)
				testErr := test.err.(BatchJobYamlErr)
				if gotErr.message() != testErr.message() {
					t.Fatalf("Expected %v but got %v", test.err, err)
				}
			}
			if err == nil && test.err != nil {
				t.Fatalf("Expected %v but got nil", test.err)
			}
		})
	}

	if err == nil {
		t.Fatalf("expect an error but got nil. n=%d, r.w=%d, r.r=%d", n, rb.w, rb.r)
	}
	if err != ErrIsFull {
		t.Fatalf("expect ErrIsFull but got nil")
	}
	if n != 0 {
		t.Fatalf("expect write 0 bytes but got %d", n)
	}
	if rb.Length() != 64 {
		t.Fatalf("expect len 64 bytes but got %d. r.w=%d, r.r=%d", rb.Length(), rb.w, rb.r)
	}
	if rb.Free() != 0 {

		if countBktStat {
			globalBucketHTTPStats.updateHTTPStats(bucket, api, nil)
		}

		globalHTTPStats.currentS3Requests.Inc(api)
		f.ServeHTTP(w, r)
		globalHTTPStats.currentS3Requests.Dec(api)

		tc, _ := r.Context().Value(mcontext.ContextTraceKey).(*mcontext.TraceCtxt)
		if tc != nil {
			globalHTTPStats.updateStats(api, tc.ResponseRecorder)

	var s string
	if err := json.Unmarshal(data, &s); err != nil {
		return err
	}

	targetID, err := parseTargetID(s)
	if err != nil {
		return err
	}

	*tid = *targetID
	return nil
}

// parseTargetID - parses string to TargetID.
func parseTargetID(s string) (*TargetID, error) {
	tokens := strings.Split(s, ":")
	if len(tokens) != 2 {
		return nil, fmt.Errorf("invalid TargetID format '%v'", s)
	}

	defer func() {
		if recover() == nil {
			t.Fatalf("unlock of unlocked RWMutex did not panic")
		}
	}()
	mu := NewDRWMutex(ds, "test")
	mu.Unlock(context.Background())
}

// Borrowed from rwmutex_test.go
func TestUnlockPanic2(t *testing.T) {
	mu := NewDRWMutex(ds, "test-unlock-panic-2")
	defer func() {
		if recover() == nil {
			t.Fatalf("unlock of unlocked RWMutex did not panic")
		}

	if *c > 0 {
		*c--
		return 1, data[:1], nil
	}
	return 0, nil, nil
}

// Check that the looping-at-EOF check doesn't trigger for merely empty tokens.
func TestEmptyLinesOK(t *testing.T) {
	c := countdown(10000)
	s := NewScanner(strings.NewReader(strings.Repeat("\n", 10000)))
	s.Split(c.split)
	for s.Scan() {
	}
	if s.Err() != nil {
		t.Fatal("after scan:", s.Err())
	}
	if c != 0 {