zhijiangW commented on a change in pull request #7368: [FLINK-10742][network] 
Let Netty use Flink's buffers directly in credit-based mode
URL: https://github.com/apache/flink/pull/7368#discussion_r377461190
 
 

 ##########
 File path: 
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/netty/NettyMessage.java
 ##########
 @@ -449,6 +486,10 @@ static ErrorResponse readFrom(ByteBuf buffer) throws 
Exception {
                                }
                        }
                }
+
+               static int getMessageHeaderLength(int lengthWithoutFrameHeader) 
{
+                       return lengthWithoutFrameHeader;
 
 Review comment:
   Actually this way is still hacky, the specific message should be aware of 
its length, but it is still understood by the upper layer and take a round to 
get it.

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