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https://issues.apache.org/jira/browse/FLINK-10331?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16618607#comment-16618607
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ASF GitHub Bot commented on FLINK-10331:
----------------------------------------
pnowojski commented on a change in pull request #6692: [FLINK-10331][network]
reduce unnecesary flushing
URL: https://github.com/apache/flink/pull/6692#discussion_r218325893
##########
File path:
flink-runtime/src/test/java/org/apache/flink/runtime/io/network/partition/InputGateConcurrentTest.java
##########
@@ -198,6 +199,8 @@ public void testConsumptionWithMixedChannels() throws
Exception {
private abstract static class Source {
abstract void addBufferConsumer(BufferConsumer bufferConsumer)
throws Exception;
+
+ abstract void flush();
Review comment:
Why did you need to add this `flush`? What was wrong?
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> Fix unnecessary flush requests to the network stack
> ---------------------------------------------------
>
> Key: FLINK-10331
> URL: https://issues.apache.org/jira/browse/FLINK-10331
> Project: Flink
> Issue Type: Sub-task
> Components: Network
> Affects Versions: 1.5.0, 1.5.1, 1.5.2, 1.5.3, 1.6.0, 1.7.0
> Reporter: Nico Kruber
> Assignee: Nico Kruber
> Priority: Major
> Labels: pull-request-available
>
> With the re-design of the record writer interaction with the
> result(sub)partitions, flush requests can currently pile up in these
> scenarios:
> - a previous flush request has not been completely handled yet and/or is
> still enqueued or
> - the network stack is still polling from this subpartition and doesn't need
> a new notification
> These lead to increased notifications in low latency settings (low output
> flusher intervals) which can be avoided.
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