[jira] [Assigned] (HDFS-8921) Add an option to Balancer for specifying the k-most over-utilized DNs or all over-utilized DNs as sources.

["Tsz Wo Nicholas Sze (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDFS-8921?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tsz Wo Nicholas Sze reassigned HDFS-8921:
-----------------------------------------

    Assignee:     (was: Tsz Wo Nicholas Sze)

> Add an option to Balancer for specifying the k-most over-utilized DNs or all over-utilized DNs as sources.
> ----------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-8921
>                 URL: https://issues.apache.org/jira/browse/HDFS-8921
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: balancer & mover
>            Reporter: Tsz Wo Nicholas Sze
>
> Arpit suggested to add a separate option to source from the most over-utilized DataNodes first so the administrator does not have to pass the source DNs manually; see [this comment|https://issues.apache.org/jira/browse/HDFS-8826?focusedCommentId=14700576&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14700576].  The new option could allow specifying the k-most over-utilized DNs or all over-utilized DNs as sources.



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