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From "Vinayakumar B (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10440) Improve DataNode web UI
Date Tue, 07 Jun 2016 06:47:21 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10440?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15317983#comment-15317983
] 

Vinayakumar B commented on HDFS-10440:
--------------------------------------

Commenting after seeing the HTML, didnt look at the patch yet.

1. HTML page looks nice.
2. I think, it would be better to show the relative time of last heartbeat sent and absolute
time of last block report sent per namenode.
3. In Volume stats, "Configured Capacity" also could be added as first column.
4. Redundent 'Capacity' word could be removed from remaining column headers to make the columns
smaller. (I am also fine, if you insist to keep it)

> Improve DataNode web UI
> -----------------------
>
>                 Key: HDFS-10440
>                 URL: https://issues.apache.org/jira/browse/HDFS-10440
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode, ui
>    Affects Versions: 2.7.0
>            Reporter: Weiwei Yang
>            Assignee: Weiwei Yang
>         Attachments: HDFS-10440.001.patch, HDFS-10440.002.patch, datanode_2nns.html.002.jpg,
datanode_html.001.jpg, datanode_loading_err.002.jpg, datanode_utilities.001.jpg, datanode_utilities.002.jpg,
dn_web_ui_mockup.jpg
>
>
> At present, datanode web UI doesn't have much information except for node name and port.
Propose to add more information similar to namenode UI, including, 
> * Static info (version, block pool  and cluster ID)
> * Block pools info (BP IDs, namenode address, actor states)
> * Storage info (Volumes, capacity used, reserved, left)
> * Utilities (logs)



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