[jira] [Resolved] (HDFS-16971) Add read time metrics for remote reads in Statistics

["Íñigo Goiri (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDFS-16971?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Íñigo Goiri resolved HDFS-16971.
--------------------------------
    Fix Version/s:     (was: 3.3.0)
     Hadoop Flags: Reviewed
       Resolution: Fixed

> Add read time metrics for remote reads in Statistics
> ----------------------------------------------------
>
>                 Key: HDFS-16971
>                 URL: https://issues.apache.org/jira/browse/HDFS-16971
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: hdfs
>            Reporter: Melissa You
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 3.4.0
>
>
> In Filesystem.java, currently it only collects bytes read not the corresponding timing of reads.
> In particular, we're interested in time spent on remote reads(not local reads). Adding timing info will help us understand it better and further analyze how locality of DN behaves. 



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