lastSetDeadline = now
		}

		_, err := buf.WriteTo(conn)
		if err != nil {
			if !xnet.IsNetworkOrHostDown(err, true) {
				gridLogIf(ctx, fmt.Errorf("ws write: %w", err))
			}
			return false
		}
		if buf.Cap() > writeBufferSize*8 {
			// Reset buffer if it gets too big, so we don't keep it around.
			buf = bytes.Buffer{}
		}
		buf.Reset()
		return true
	}

		if gotObj.name != want {
			t.Errorf("entry %d, want %q, got %q", i, want, gotObj.name)
		}
	}
}

func Test_newMetacacheStream(t *testing.T) {
	r := loadMetacacheSample(t)
	var buf bytes.Buffer
	w := newMetacacheWriter(&buf, 1<<20)
	defer w.Close()
	err := r.readFn(func(object metaCacheEntry) bool {
		err := w.write(object)
		if err != nil {
			t.Fatal(err)
		}
		return true
	})
	r.Close()

	// Read `xl.meta` in parallel across disks.
	for index := range rawFileInfos {
		rf := rawFileInfos[index]
		if rf.Buf == nil {
			continue
		}
		if !readData {
			// Save the buffer so we can reuse it.
			v2bufs[index] = rf.Buf
		}

		var xl xlMetaV2
		if err := xl.LoadOrConvert(rf.Buf); err != nil {
			errs[index] = err
			continue
		}
		metadataArray[index] = &xl

	bucket := "bucket"
	object := "object"
	opts := ObjectOptions{}
	buf := make([]byte, smallFileThreshold*16)
	if _, err = io.ReadFull(crand.Reader, buf); err != nil {
		t.Fatal(err)
	}

	// Test use case 1: All disks are online, xl.meta are present, but data are missing
	_, err = obj.PutObject(ctx, bucket, object, mustGetPutObjReader(t, bytes.NewReader(buf), int64(len(buf)), "", ""), opts)
	if err != nil {
		t.Fatal(err)
	}

            return sessionKey;
        }

        @Override
        protected void doSendFragment(byte[] buf, int off, int length) throws IOException {
            // Mock implementation for testing
        }

        @Override
        protected int doReceiveFragment(byte[] buf) throws IOException {
            return doReceiveFragmentReturn;
        }

        @Override

        assertEquals(0, ndrBuffer.start);
        assertEquals(0, ndrBuffer.index);
        assertEquals(0, ndrBuffer.length);
        assertSame(ndrBuffer, ndrBuffer.deferred);
        assertSame(buffer, ndrBuffer.buf);

        // Test with a different start offset
        NdrBuffer offsetBuffer = new NdrBuffer(buffer, 10);
        assertEquals(10, offsetBuffer.start);
        assertEquals(10, offsetBuffer.index);

            pool.contains(null); // Should be fast without global sync
        }

        // 2. Buffer Cache Test
        for (int i = 0; i < 100; i++) {
            byte[] buf = BufferCache.getBuffer();
            BufferCache.releaseBuffer(buf);
        }

        // 3. Atomic Operations Test
        AtomicLong counter = new AtomicLong(0);
        for (int i = 0; i < 1000; i++) {
            counter.addAndGet(1024);

        try {
            final InputStream is = request.getInputStream();
            try {
                final byte[] buf = new byte[1024];
                while ((is.read(buf)) != -1) {}
            } catch (final Exception ignored) {} finally {
                try {
                    is.close();
                } catch (final Exception ignored) {}
            }

	}

	bp.Put(b)

	// Check the size of the pool.
	if uint64(len(bp.c)) != size {
		t.Fatalf("bytepool size invalid: got %v want %v", len(bp.c), size)
	}

	// lets drain the buf channel first before we validate invalid buffers.
	for range size {
		bp.Get() // discard
	}

	// Try putting some invalid buffers into pool
	bp.Put(make([]byte, bp.w, bp.wcap-1)) // wrong capacity is rejected (less)

	select {
	case <-ctx.Done():
		return ctx.Err()
	case maxConcurrentScannerSaves <- struct{}{}:
	}

	buf := bytebufferpool.Get()
	defer func() {
		<-maxConcurrentScannerSaves
		buf.Reset()
		bytebufferpool.Put(buf)
	}()

	if err := d.serializeTo(buf); err != nil {
		return err
	}

	save := func(name string, timeout time.Duration) error {