X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/66088cabf30c5291ad8894e7009d9c9af466c158..3583e494ed815632bbaa2582fd0a49110a21123b:/sdk/go/keepclient/support.go

diff --git a/sdk/go/keepclient/support.go b/sdk/go/keepclient/support.go
index 8d299815b2..6acaf64baa 100644
--- a/sdk/go/keepclient/support.go
+++ b/sdk/go/keepclient/support.go
@@ -127,7 +127,7 @@ func (kc *KeepClient) uploadToKeepServer(host string, hash string, classesTodo [
 	}
 }
 
-func (kc *KeepClient) BlockWrite(ctx context.Context, req arvados.BlockWriteOptions) (arvados.BlockWriteResponse, error) {
+func (kc *KeepClient) httpBlockWrite(ctx context.Context, req arvados.BlockWriteOptions) (arvados.BlockWriteResponse, error) {
 	var resp arvados.BlockWriteResponse
 	var getReader func() io.Reader
 	if req.Data == nil && req.Reader == nil {
@@ -149,8 +149,12 @@ func (kc *KeepClient) BlockWrite(ctx context.Context, req arvados.BlockWriteOpti
 		getReader = func() io.Reader { return bytes.NewReader(req.Data[:req.DataSize]) }
 	} else {
 		buf := asyncbuf.NewBuffer(make([]byte, 0, req.DataSize))
+		reader := req.Reader
+		if req.Hash != "" {
+			reader = HashCheckingReader{req.Reader, md5.New(), req.Hash}
+		}
 		go func() {
-			_, err := io.Copy(buf, HashCheckingReader{req.Reader, md5.New(), req.Hash})
+			_, err := io.Copy(buf, reader)
 			buf.CloseWithError(err)
 		}()
 		getReader = buf.NewReader