Github user NicoK commented on a diff in the pull request: https://github.com/apache/flink/pull/4735#discussion_r141657809 --- Diff: flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/consumer/RemoteInputChannel.java --- @@ -87,6 +88,12 @@ /** The number of available buffers that have not been announced to the producer yet. */ private final AtomicInteger unannouncedCredit = new AtomicInteger(0); + /** The number of unsent buffers in the producer's sub partition. */ + private final AtomicInteger senderBacklog = new AtomicInteger(0); + + /** The tag indicates whether this channel is waiting for additional floating buffers from the buffer pool. */ + private final AtomicBoolean isWaitingFloatingBuffers = new AtomicBoolean(false); --- End diff -- ok, fine - so I'll see more details in the next PR and we get this in here
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