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https://issues.apache.org/jira/browse/FLINK-25646?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17477658#comment-17477658
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Piotr Nowojski edited comment on FLINK-25646 at 1/18/22, 8:34 AM:
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merged commit 25f3706 into apache:master
Note, we are hoping to find time in the future, to investigate further this
issue. And either solve via some code change or by tweaking the default
configuration of the Flink. However this would require quite a bit of time
invested in analysing, benchmarking various scenarios and/or feedback from
users, so we are postponing this for the future.
was (Author: pnowojski):
merged commit 25f3706 into apache:master
> Document buffer debloating issues with high parallelism
> -------------------------------------------------------
>
> Key: FLINK-25646
> URL: https://issues.apache.org/jira/browse/FLINK-25646
> Project: Flink
> Issue Type: Improvement
> Components: Documentation, Runtime / Network
> Affects Versions: 1.14.0
> Reporter: Anton Kalashnikov
> Assignee: Anton Kalashnikov
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.15.0
>
>
> According to last benchmarks, there are some problems with buffer debloat
> when job has high parallelism. The high parallelism means the different value
> from job to job but in general it is more than 200. So it makes sense to
> document that problem and propose the solution - increasing the number of
> buffers.
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