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Posted to hdfs-dev@hadoop.apache.org by "Xiaobing Zhou (JIRA)" <ji...@apache.org> on 2015/11/24 23:45:11 UTC

[jira] [Created] (HDFS-9462) DiskBalancer: Add Query Command

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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