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Kihwal Lee edited comment on HDFS-10440 at 5/31/16 3:27 PM: ------------------------------------------------------------ Thanks for the patch. I think it is showing the available information very well. Having said that, we can take this opportunity to expose more on the block pool via jmx. The namenode addresses are useful, but showing the service actor state will be even better. Sometimes datanodes have trouble talking to some namenodes, but not all. Verifying it usually involves looking at the log. Exposing individual BP service actor state through jmx and showing them through UI will be very helpful. For the storage section, {{VolumeInfo}} in trunk/2.9/2.8 already contains {{reservedSpaceForReplicas}} (HDFS-6955) and {{numBlocks}} (HDFS-9425). Please verify (screenshot?) they appear on the web ui. was (Author: kihwal): Thanks for the patch. I think it is showing the available information very well. Having said that, we can take this opportunity to expose more on the block pool via jmx. The namenode addressed are useful, but showing the service actor state will be even better. Sometimes datanodes have trouble talking to some namenode, but not all. Verifying it usually involves looking at the log. Exposing individual BP service actor state through jmx and showing them through UI will be very helpful. For the storage section, {{VolumeInfo}} in trunk/2.9/2.8 already contains {{reservedSpaceForReplicas}} (HDFS-6955) and {{numBlocks}} (HDFS-9425). Please verify (screenshot?) they appear on the web ui. > Improve DataNode web UI > ----------------------- > > Key: HDFS-10440 > URL: https://issues.apache.org/jira/browse/HDFS-10440 > Project: Hadoop HDFS > Issue Type: Improvement > Components: datanode > Affects Versions: 2.5.0, 2.6.0, 2.7.0 > Reporter: Weiwei Yang > Assignee: Weiwei Yang > Attachments: HDFS-10440.001.patch, datanode_html.001.jpg, > datanode_utilities.001.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) > * Running state (active, decommissioning, decommissioned or lost etc) > * Summary (blocks, capacity, storage etc) > * Utilities (logs) -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org