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Posted to hdfs-issues@hadoop.apache.org by "Zhe Zhang (JIRA)" <ji...@apache.org> on 2016/11/15 00:28:58 UTC
[jira] [Commented] (HDFS-10534) NameNode WebUI should display
DataNode usage histogram
[ https://issues.apache.org/jira/browse/HDFS-10534?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15665516#comment-15665516 ]
Zhe Zhang commented on HDFS-10534:
----------------------------------
Thanks Kai again for the work, and sorry for the late review. I actually didn't find an easier way to generate histogram from dust.
The histogram looks pretty nice! The only concern I have is that it is a little too wide and requires scrolling to the right to view the full picture. Meanwhile, i think each bar can be narrower which should save space to display the whole picture.
+1 pending this change. Thanks.
> 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, HDFS-10534.08.patch, Screen Shot 2016-06-23 at 6.25.50 AM.png, Screen Shot 2016-07-07 at 23.29.14.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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