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https://issues.apache.org/jira/browse/HDFS-10440?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15336442#comment-15336442
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Weiwei Yang commented on HDFS-10440:
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Hello [~kihwal]
JMX returns time passed from last block report in milliseconds, and then the JS
calculates the relative time on browser. So even the clock is not sync between
datanode and browser, it won't be an issue.
I just uploaded v5 patch, including following updates
* Fix checkstyle and findbug issues
* Add a test to test the new JMX entry
> 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,
> HDFS-10440.003.patch, HDFS-10440.004.patch, HDFS-10440.005.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.003.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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