Github user NicoK commented on a diff in the pull request: https://github.com/apache/flink/pull/4533#discussion_r153266186 --- Diff: flink-runtime/src/main/java/org/apache/flink/runtime/io/network/netty/NettyMessage.java --- @@ -539,4 +542,60 @@ static CloseRequest readFrom(@SuppressWarnings("unused") ByteBuf buffer) throws return new CloseRequest(); } } + + static class AddCredit extends NettyMessage { --- End diff -- Please add a comment ("incremental credit announcement from the client to the server"?).
---