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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

{quote}
it would be better to show the relative time of last heartbeat sent and absolute time of last
block report sent per namenode.
{quote}
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? 

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

{quote}
Redundent 'Capacity' word could be removed
{quote}
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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