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https://issues.apache.org/jira/browse/FLINK-16428?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17408092#comment-17408092
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Piotr Nowojski commented on FLINK-16428:
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We are adding a new network memory tuning guide page as part of FLINK-23458
where we are mentioning about reducing the amount of buffers ("Selecting the
buffer count" section), which might be good enough:
https://github.com/apache/flink/pull/16988/files
> Fine-grained network buffer management for backpressure
> -------------------------------------------------------
>
> Key: FLINK-16428
> URL: https://issues.apache.org/jira/browse/FLINK-16428
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Network
> Reporter: Zhijiang
> Priority: Critical
> Fix For: 1.14.0
>
>
> It is an umbrella ticket for tracing the progress of this improvement.
> This is the second ingredient to solve the “checkpoints under backpressure”
> problem (together with unaligned checkpoints). It consists of two steps:
> * See if we can use less network memory in general for streaming jobs (with
> potentially different distribution of floating buffers in the input side)
> * Under backpressure, reduce network memory to have less in-flight data
> (needs specification of algorithm and experiments)
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