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