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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-7456) Implement Netty sender incoming pipeline for credit-based
Date Mon, 15 Jan 2018 08:21:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-7456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16325989#comment-16325989
] 

ASF GitHub Bot commented on FLINK-7456:
---------------------------------------

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

    https://github.com/apache/flink/pull/4552#discussion_r161450876
  
    --- Diff: flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/SpillableSubpartitionView.java
---
    @@ -199,6 +199,19 @@ public boolean isReleased() {
     		}
     	}
     
    +	@Override
    +	public boolean nextBufferIsEvent() {
    +		if (nextBuffer != null) {
    +			return !nextBuffer.isBuffer();
    +		}
    --- End diff --
    
    agree with integration


> Implement Netty sender incoming pipeline for credit-based
> ---------------------------------------------------------
>
>                 Key: FLINK-7456
>                 URL: https://issues.apache.org/jira/browse/FLINK-7456
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Network
>            Reporter: zhijiang
>            Assignee: zhijiang
>            Priority: Major
>             Fix For: 1.5.0
>
>
> This is a part of work for credit-based network flow control.
> On sender side, each subpartition view maintains an atomic integer {{currentCredit}}
from receiver. Once receiving the messages of {{PartitionRequest}} and {{AddCredit}}, the
{{currentCredit}} is added by deltas.
> Each view also maintains an atomic boolean field to mark it as registered available for
transfer to make sure it is enqueued in handler only once. If the {{currentCredit}} increases
from zero and there are available buffers in the subpartition, the corresponding view will
be enqueued for transferring data.



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