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https://issues.apache.org/jira/browse/FLINK-7416?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16218001#comment-16218001
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ASF GitHub Bot commented on FLINK-7416:
---------------------------------------

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

    https://github.com/apache/flink/pull/4533#discussion_r146741962
  
    --- Diff: 
flink-runtime/src/test/java/org/apache/flink/runtime/io/network/netty/PartitionRequestClientHandlerTest.java
 ---
    @@ -64,23 +75,36 @@
        @Test(timeout = 60000)
        @SuppressWarnings("unchecked")
        public void testReleaseInputChannelDuringDecode() throws Exception {
    -           // Mocks an input channel in a state as it was released during 
a decode.
    -           final BufferProvider bufferProvider = 
mock(BufferProvider.class);
    -           when(bufferProvider.requestBuffer()).thenReturn(null);
    -           when(bufferProvider.isDestroyed()).thenReturn(true);
    -           
when(bufferProvider.addBufferListener(any(BufferListener.class))).thenReturn(false);
    -
    -           final RemoteInputChannel inputChannel = 
mock(RemoteInputChannel.class);
    -           when(inputChannel.getInputChannelId()).thenReturn(new 
InputChannelID());
    -           
when(inputChannel.getBufferProvider()).thenReturn(bufferProvider);
    -
    -           final BufferResponse receivedBuffer = createBufferResponse(
    -                   TestBufferFactory.createBuffer(), 0, 
inputChannel.getInputChannelId(), 2);
    -
    -           final PartitionRequestClientHandler client = new 
PartitionRequestClientHandler();
    -           client.addInputChannel(inputChannel);
    -
    -           client.channelRead(mock(ChannelHandlerContext.class), 
receivedBuffer);
    +           final NetworkBufferPool networkBufferPool = new 
NetworkBufferPool(10, 32, MemoryType.HEAP);
    --- End diff --
    
    Yes, I will split the olds tests in a separate commit later. :)


> Implement Netty receiver outgoing pipeline for credit-based
> -----------------------------------------------------------
>
>                 Key: FLINK-7416
>                 URL: https://issues.apache.org/jira/browse/FLINK-7416
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Network
>            Reporter: zhijiang
>            Assignee: zhijiang
>             Fix For: 1.4.0
>
>
> This is a part of work for credit-based network flow control.
> The related works are :
> *  We define a new message called {{AddCredit}} to notify the incremental 
> credit during data shuffle. 
> * Whenever an {{InputChannel}}’s unannounced credit goes up from zero, the 
> channel is enqueued in the pipeline.
> * Whenever the channel becomes writable, it takes the next {{InputChannel}} 
> and sends its unannounced credit. The credit is reset to zero after each sent.
> * That way, messages are sent as often as the network has capacity and 
> contain as much credit as available for the channel at that point in time. 
> Otherwise, it would only add latency to the announcements and not increase 
> throughput.



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