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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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Zhe Zhang updated HDFS-10534:
-----------------------------
Resolution: Fixed
Hadoop Flags: Reviewed
Fix Version/s: 2.7.4
Target Version/s: 2.7.4 (was: 3.0.0-alpha3)
Status: Resolved (was: Patch Available)
> 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
> Fix For: 2.9.0, 2.7.4, 3.0.0-alpha3, 2.8.1
>
> Attachments: HDFS-10534.01.patch, HDFS-10534.02.patch,
> HDFS-10534.03.patch, HDFS-10534.04.patch, HDFS-10534.05.patch,
> HDFS-10534.06.patch, HDFS-10534.07.patch, HDFS-10534.08.patch,
> HDFS-10534.09.patch, HDFS-10534.10.patch, HDFS-10534.11.patch,
> HDFS-10534-branch-2.7-01.patch, Screen Shot 2016-06-23 at 6.25.50 AM.png,
> Screen Shot 2016-07-07 at 23.29.14.png, Screen Shot 2016-11-14 at 4.27.15
> PM.png, Screen Shot 2016-11-17 at 0.14.06.png, Screen Shot 2017-01-26 at
> 9.29.11 AM.png, table_histogram.html
>
>
> 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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