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From "Yiqun Lin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11358) DiskBalancer: Report command supports reading nodes from host file
Date Thu, 16 Mar 2017 14:39:41 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11358?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15928181#comment-15928181
] 

Yiqun Lin commented on HDFS-11358:
----------------------------------

HI [~anu], could you please take a quick review for this improvement of DiskBalancer that
I did before? I am thinking we can apply this in 3.0 alpha3. Thanks.

> DiskBalancer: Report command supports reading nodes from host file
> ------------------------------------------------------------------
>
>                 Key: HDFS-11358
>                 URL: https://issues.apache.org/jira/browse/HDFS-11358
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: diskbalancer
>    Affects Versions: 3.0.0-alpha2
>            Reporter: Yiqun Lin
>            Assignee: Yiqun Lin
>         Attachments: HDFS-11358.001.patch
>
>
> This is a improvement of JIRA HDFS-10821. In HDFS-10821, it supports the {{diskbalancer
report}} command can be executed with multiple nodes. But the multiple nodes are read from
a nodes string. It will be not good to use when the cluster is big enough. A better way we
can do is making that can be read from a host file as that has been done in many places in
HDFS(ex.  decommission, balancer). This JIRA focus on this point, and will makes this done
in diskbalancer.



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