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https://issues.apache.org/jira/browse/FLINK-8581?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16369142#comment-16369142
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ASF GitHub Bot commented on FLINK-8581:
---------------------------------------

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

    https://github.com/apache/flink/pull/5423#discussion_r169082736
  
    --- Diff: 
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/consumer/InputGate.java
 ---
    @@ -72,7 +73,19 @@
     
        void requestPartitions() throws IOException, InterruptedException;
     
    -   BufferOrEvent getNextBufferOrEvent() throws IOException, 
InterruptedException;
    +   /**
    +    * Blocking call waiting for next {@link BufferOrEvent}.
    +    *
    +    * @return {@code Optional.empty()} if {@link #isFinished()} returns 
true.
    +    */
    +   Optional<BufferOrEvent> getNextBufferOrEvent() throws IOException, 
InterruptedException;
    --- End diff --
    
    👍 


> Improve performance for low latency network
> -------------------------------------------
>
>                 Key: FLINK-8581
>                 URL: https://issues.apache.org/jira/browse/FLINK-8581
>             Project: Flink
>          Issue Type: Improvement
>          Components: Network
>    Affects Versions: 1.5.0
>            Reporter: Piotr Nowojski
>            Assignee: Piotr Nowojski
>            Priority: Major
>




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