AHeise commented on a change in pull request #13228:
URL: https://github.com/apache/flink/pull/13228#discussion_r476662192



##########
File path: 
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/consumer/SingleInputGate.java
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@@ -770,34 +808,50 @@ void triggerPartitionStateCheck(ResultPartitionID 
partitionId) {
                        }));
        }
 
-       private void queueChannel(InputChannel channel) {
-               int availableChannels;
+       private void queueChannel(InputChannel channel, boolean priority) {

Review comment:
       Well this change is less about expressing priority events and more about 
making sure that channels with priority events are always polled first. It's 
some kind of potential double notification, where the priority notification 
overrides the normal data available notification.




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