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https://issues.apache.org/jira/browse/HDFS-10534?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15368542#comment-15368542
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Andrew Wang commented on HDFS-10534:
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Note that if we're adding another dependency, it needs to be added to LICENSE
and NOTICE. We already have a copy of d3 in hadoop-sls, so this shouldn't be
too bad. I'd also prefer that we use the minified version, and put the version
in the filename.
If we wanted to drop the d3 dependency, I think we could calculate the
histogram ourselves and render it as a table. My preference is to keep the
webUI lean if possible. It might be that bootstrap, jquery, or dust (our
existing dependencies) also have nice ways of making a histogram.
> 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,
> HDFS-10534.06.patch, HDFS-10534.07.patch, Screen Shot 2016-06-23 at 6.25.50
> AM.png, Screen Shot 2016-07-07 at 23.29.14.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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