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https://issues.apache.org/jira/browse/YARN-2943?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wangda Tan updated YARN-2943:
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Attachment: YARN-2943.2.patch
Hi [~jianhe],
Thanks for your comments,
bq. If I restart NM, “num of active NMs” is incorrect; this is probably because
NM is using ephemeral ports;
This is what RM can see about NM, after some time elapsed, lost NM will be
marked to "LOSTED", and will not count in RM side too.
bq. “<NO_LABEL>” -> “N/A”, similarly, update the previous nodes page to show
“N/A” for not labeled nodes;
IMO, N/A is not clear enough. By wikipedia: http://en.wikipedia.org/wiki/N/a,
N/a means "not available", "not applicable" or "no answer". Here no-label is
just a kind of special label, since "NO_LABEL" has all same characteristics as
other "normal" labels, like exclusivity, etc.
bq. usability: <num of active NMs> link can point to a filtered list of nodes
by label ?
It already did like what you suggested, when user/admin click the number, it
will link to NM page and only shows NMs has that label.
And I've addressed rest of your comments.
> Add a node-labels page in RM web UI
> -----------------------------------
>
> Key: YARN-2943
> URL: https://issues.apache.org/jira/browse/YARN-2943
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager
> Reporter: Wangda Tan
> Assignee: Wangda Tan
> Attachments: Node-labels-page.png, Nodes-page-with-label-filter.png,
> YARN-2943.1.patch, YARN-2943.2.patch
>
>
> Now we have node labels in the system, but there's no a very convenient to
> get information like "how many active NM(s) assigned to a given label?", "how
> much total resource for a give label?", "For a given label, which queues can
> access it?", etc.
> It will be better to add a node-labels page in RM web UI, users/admins can
> have a centralized view to see such information.
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