[jira] [Updated] (SPARK-21934) Expose Netty memory usage via Metrics System

["Saisai Shao (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-21934?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Saisai Shao updated SPARK-21934:
--------------------------------
    Issue Type: Sub-task  (was: New Feature)
        Parent: SPARK-9103

> Expose Netty memory usage via Metrics System
> --------------------------------------------
>
>                 Key: SPARK-21934
>                 URL: https://issues.apache.org/jira/browse/SPARK-21934
>             Project: Spark
>          Issue Type: Sub-task
>          Components: Spark Core
>    Affects Versions: 2.3.0
>            Reporter: Saisai Shao
>
> This is a follow-up work of SPARK-9104 to expose the Netty memory usage to MetricsSystem. My initial thought is to only expose Shuffle memory usage, since shuffle is a major part of memory usage in network communication compared to RPC, file server, block transfer. 
> If user wants to also expose Netty memory usage for other modules, we could add more metrics later.



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