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From "Kai Sasaki (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-10534) NameNode WebUI should display DataNode usage histogram
Date Wed, 29 Jun 2016 00:30:10 GMT

     [ https://issues.apache.org/jira/browse/HDFS-10534?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kai Sasaki updated HDFS-10534:
------------------------------
    Description: 
In addition of *Min/Median/Max*, another meaningful metric for cluster balance is DN usage
in histogram style.
Since NN already has provided necessary information to calculate histogram of DN usage, it
can be done in JS side.

  was:
In addition of *Min/Median/Max*, another meaningful metric for cluster balance is DN usage
rate at a certain percentile (e.g. 90 or 95). We should add a config option, and another filed
on NN WebUI, to display this.

Current implementation 


> NameNode WebUI should display DataNode usage histogram
> ------------------------------------------------------
>
>                 Key: HDFS-10534
>                 URL: https://issues.apache.org/jira/browse/HDFS-10534
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode, ui
>            Reporter: Zhe Zhang
>            Assignee: Kai Sasaki
>         Attachments: HDFS-10534.01.patch, HDFS-10534.02.patch, HDFS-10534.03.patch, HDFS-10534.04.patch,
HDFS-10534.05.patch, Screen Shot 2016-06-23 at 6.25.50 AM.png
>
>
> In addition of *Min/Median/Max*, another meaningful metric for cluster balance is DN
usage in histogram style.
> Since NN already has provided necessary information to calculate histogram of DN usage,
it can be done in JS side.



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