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Posted to issues@flink.apache.org by "zhijiang (Jira)" <ji...@apache.org> on 2020/02/12 05:53:00 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 ]

zhijiang updated FLINK-16012:
-----------------------------
    Fix Version/s: 1.11.0

> 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: Improvement
>            Reporter: zhijiang
>            Assignee: Yingjie Cao
>            Priority: Major
>             Fix For: 1.11.0
>
>
> 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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