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Posted to issues@flink.apache.org by "Nico Kruber (Jira)" <ji...@apache.org> on 2020/03/13 08:06:00 UTC

[jira] [Commented] (FLINK-10742) Let Netty use Flink's buffers directly in credit-based mode

    [ https://issues.apache.org/jira/browse/FLINK-10742?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17058497#comment-17058497 ] 

Nico Kruber commented on FLINK-10742:
-------------------------------------

[~zjwang] I'm not sure, but since the reported memory usage improvements were big in large-scale deployments, is this worth putting in a small release note for that?

> Let Netty use Flink's buffers directly in credit-based mode
> -----------------------------------------------------------
>
>                 Key: FLINK-10742
>                 URL: https://issues.apache.org/jira/browse/FLINK-10742
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Runtime / Network
>    Affects Versions: 1.7.0
>            Reporter: Nico Kruber
>            Assignee: Yun Gao
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.11.0
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> For credit-based flow control, we always have buffers available for data that is sent to use. We could thus use them directly and not copy the network stream into Netty buffers first and then into our buffers.



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