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https://issues.apache.org/jira/browse/FLINK-17208?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17245081#comment-17245081
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Arvid Heise commented on FLINK-17208:
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What's the status on this ticket? Aren't the scenarios so rare that we could
safely ignore double notifications?
> Reduce redundant data available notification of PipelinedSubpartition
> ---------------------------------------------------------------------
>
> Key: FLINK-17208
> URL: https://issues.apache.org/jira/browse/FLINK-17208
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Network
> Affects Versions: 1.11.0
> Reporter: Yingjie Cao
> Assignee: Yingjie Cao
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.12.0
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> There are three scenarios that may lead to redundant data available
> notifications for PipelinedSubpartition:
> # Add a new BufferConsumer after an event;
> # Finish the current subpartition;
> # Flush an event buffer.
> We can avoid these redundant data available notifications.
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