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Posted to hdfs-dev@hadoop.apache.org by "Takanobu Asanuma (Jira)" <ji...@apache.org> on 2021/06/24 04:29:00 UTC

[jira] [Resolved] (HDFS-16076) Avoid using slow DataNodes for reading by sorting locations

     [ https://issues.apache.org/jira/browse/HDFS-16076?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Takanobu Asanuma resolved HDFS-16076.
-------------------------------------
    Fix Version/s: 3.3.2
                   3.4.0
       Resolution: Fixed

> Avoid using slow DataNodes for reading by sorting locations
> -----------------------------------------------------------
>
>                 Key: HDFS-16076
>                 URL: https://issues.apache.org/jira/browse/HDFS-16076
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: hdfs
>            Reporter: tomscut
>            Assignee: tomscut
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 3.4.0, 3.3.2
>
>          Time Spent: 2h 20m
>  Remaining Estimate: 0h
>
> After sorting the expected location list will be: live -> slow -> stale -> staleAndSlow -> entering_maintenance -> decommissioned. This reduces the probability that slow nodes will be used for reading.



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