HBASE-28017 Set request and response size metrics in NettyRpcDuplexHa…

…ndler (#5473)

Co-authored-by: Ray Mattingly <rmattingly@hubspot.com>
Signed-off-by: Duo Zhang <zhangduo@apache.org>
Signed-off-by: Bryan Beaudreault <bbeaudreault@apache.org>

hbase-client/src/main/java/org/apache/hadoop/hbase/ipc/NettyRpcDuplexHandler.java

@@ -110,6 +110,7 @@ private void writeRequest(ChannelHandlerContext ctx, Call call, ChannelPromise p
       } else {
         ctx.write(buf, promise);
       }
+      call.callStats.setRequestSizeBytes(totalSize);
     }
   }
 
@@ -193,6 +194,7 @@ private void readResponse(ChannelHandlerContext ctx, ByteBuf buf) throws IOExcep
       }
       return;
     }
+    call.callStats.setResponseSizeBytes(totalSize);
     if (remoteExc != null) {
       call.setException(remoteExc);
       return;