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https://issues.apache.org/jira/browse/FLINK-8694?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16376859#comment-16376859
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ASF GitHub Bot commented on FLINK-8694:
---------------------------------------

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

    https://github.com/apache/flink/pull/5572#discussion_r170589597
  
    --- Diff: 
flink-runtime/src/test/java/org/apache/flink/runtime/io/network/partition/SpillableSubpartitionTest.java
 ---
    @@ -332,8 +332,8 @@ public void 
testConsumeSpillablePartitionSpilledDuringConsume() throws Exception
                //TODO: re-enable this?
     //         assertEquals(BUFFER_DATA_SIZE * 4 + 4, 
partition.getTotalNumberOfBytes());
     
    -           listener.awaitNotifications(3, 30_000);
    -           assertEquals(3, listener.getNumNotifications());
    +           listener.awaitNotifications(2, 30_000);
    +           assertEquals(2, listener.getNumNotifications());
    --- End diff --
    
    note that we will be notified once the spilled writer completes


> Make notifyDataAvailable call reliable
> --------------------------------------
>
>                 Key: FLINK-8694
>                 URL: https://issues.apache.org/jira/browse/FLINK-8694
>             Project: Flink
>          Issue Type: Sub-task
>            Reporter: Piotr Nowojski
>            Assignee: Piotr Nowojski
>            Priority: Blocker
>
> After FLINK-8591 
> org.apache.flink.runtime.io.network.netty.SequenceNumberingViewReader#notifyDataAvailable
>  (and the same for Credit base flow control) due to race condition can be 
> sometimes ignored. 



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