[GitHub] flink pull request #4499: [FLINK-7394][core] Implement basic InputChannel fo...

[NicoK <gi...@git.apache.org>]

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

    https://github.com/apache/flink/pull/4499#discussion_r136056661
  
    --- Diff: flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/consumer/RemoteInputChannel.java ---
    @@ -72,6 +79,21 @@
     	 */
     	private int expectedSequenceNumber = 0;
     
    +	/** The initial number of exclusive buffers assigned to this channel. */
    +	private int initialCredit;
    +
    +	/** The current available exclusive buffers and requested floating buffers from buffer pool. */
    +	private final Queue<Buffer> availableBuffers = new ArrayDeque<>();
    +
    +	/** The number of available buffers that have not unannounced to producer yet. */
    +	private final AtomicInteger unannouncedCredit = new AtomicInteger(0);
    +
    +	/** The number of unsent buffers in producer's sub partition. */
    +	private final AtomicInteger currentSenderBacklog = new AtomicInteger(0);
    +
    +	/** The tag indicates whether this channel is waiting additional floating buffers from buffer pool. */
    --- End diff --
    
    `...waiting for additional floating buffers from the buffer pool`


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