diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/ipc/NettyRpcDuplexHandler.java b/hbase-client/src/main/java/org/apache/hadoop/hbase/ipc/NettyRpcDuplexHandler.java
index 47b0b29a5c6e..ad8c51568a32 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/ipc/NettyRpcDuplexHandler.java
+++ b/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;