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Posted to issues@flink.apache.org by "Piotr Nowojski (Jira)" <ji...@apache.org> on 2020/05/19 13:50:00 UTC

[jira] [Updated] (FLINK-16012) Reduce the default number of exclusive buffers from 2 to 1 on receiver side

     [ https://issues.apache.org/jira/browse/FLINK-16012?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Piotr Nowojski updated FLINK-16012:
-----------------------------------
    Fix Version/s:     (was: 1.11.0)
                   1.12.0

> Reduce the default number of exclusive buffers from 2 to 1 on receiver side
> ---------------------------------------------------------------------------
>
>                 Key: FLINK-16012
>                 URL: https://issues.apache.org/jira/browse/FLINK-16012
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Runtime / Network
>            Reporter: Zhijiang
>            Assignee: Yingjie Cao
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.12.0
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> In order to reduce the inflight buffers for checkpoint in the case of back pressure, we can reduce the number of exclusive buffers for remote input channel from default 2 to 1 as the first step. Besides that, the total required buffers are also reduced as a result. We can further verify the performance effect via various of benchmarks.



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