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From "Weiwei Yang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10440) Improve DataNode web UI
Date Tue, 07 Jun 2016 09:02:21 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10440?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15318180#comment-15318180

Weiwei Yang commented on HDFS-10440:

Hello [~vshreyas] 

Thanks for your comments. Please see my response below

it would be better to show the relative time of last heartbeat sent and absolute time of last
block report sent per namenode.
Yes, however they are not exposed via DN JMX now, so it would require more changes. If necessary,
we can address that in another JIRA probably? 

 "Configured Capacity" also could be added as first column.
Similar to 2, "Configured Capacity" is not available from DN JMX yet.

Redundent 'Capacity' word could be removed
I'd prefer to keep it, to be consistent with namenode UI (DFS Storage Types)

Let me know if this makes sense. Thank you.

> 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, nn_dfs_storage_types.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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