[jira] [Resolved] (HDFS-15549) Use Hardlink to move replica between DISK and ARCHIVE storage if on same filesystem mount

["Jing Zhao (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDFS-15549?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jing Zhao resolved HDFS-15549.
------------------------------
    Fix Version/s: 3.4.0
     Hadoop Flags: Reviewed
       Resolution: Fixed

+1. Thank you for the contribution, [~LeonG]!

> Use Hardlink to move replica between DISK and ARCHIVE storage if on same filesystem mount
> -----------------------------------------------------------------------------------------
>
>                 Key: HDFS-15549
>                 URL: https://issues.apache.org/jira/browse/HDFS-15549
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode
>            Reporter: Leon Gao
>            Assignee: Leon Gao
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 3.4.0
>
>          Time Spent: 3h
>  Remaining Estimate: 0h
>
> When moving blocks between DISK/ARCHIVE, we should prefer the volume on the same underlying filesystem and use "rename" instead of "copy" to save IO.



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