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From "Xiaobing Zhou (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-9462) DiskBalancer: Add Query Command
Date Tue, 24 Nov 2015 22:45:11 GMT
Xiaobing Zhou created HDFS-9462:
-----------------------------------

             Summary: DiskBalancer: Add Query Command
                 Key: HDFS-9462
                 URL: https://issues.apache.org/jira/browse/HDFS-9462
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: balancer & mover
    Affects Versions: 2.8.0
            Reporter: Xiaobing Zhou
            Assignee: Xiaobing Zhou


It's quite helpful to do:
1) report node information for the top X of DataNodes that will benefit from running disk
balancer
2) report volume level information for any specific DataNode. 

This is done by:
1) reading the cluster info, sorting the DiskbalancerNodes by their NodeDataDensity and printing
out their corresponding information.
2) reading the cluster info, and print out volume level information for that DataNode requested.



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