[GitHub] flink pull request #4517: [FLINK-7411][network] minor performance improvemen...

[pnowojski]

Github user pnowojski commented on a diff in the pull request:

    https://github.com/apache/flink/pull/4517#discussion_r136836067
  
    --- Diff: 
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/netty/NettyMessage.java
 ---
    @@ -220,6 +216,7 @@ void releaseBuffer() {
     
                @Override
                ByteBuf write(ByteBufAllocator allocator) throws IOException {
    +                   assert buffer != null; // see BufferResponse()
    --- End diff --
    
    `checkState`


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