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https://issues.apache.org/jira/browse/FLINK-25646?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17856273#comment-17856273
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Piotr Nowojski commented on FLINK-25646:
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Hi [~hejufang001]. No, there have been no progress on this issue.

> floating buffers per gate     8(default value)        2000

does it mean for buffer debloating enabled, you have increased floating buffers 
from 8 to 2000?

Also, have you tried setting higher debloating target? AFAIR we have observed 
that increasing the target from 1s (default) to 5s seems to behave much better 
where it comes to the max throughput.

> 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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