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From "Varun Saxena (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4517) [YARN-3368] Add nodes page
Date Thu, 17 Mar 2016 15:53:33 GMT

    [ https://issues.apache.org/jira/browse/YARN-4517?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15199761#comment-15199761

Varun Saxena commented on YARN-4517:

[~gtCarrera9], as per discussion with Wangda, unification of app/container information, we
can do after this branch goes into trunk. I think we can definitely unify and have a single
container page. I will do this later as part of another JIRA. NM single app page, will have
to see. 

Regarding this, 
bq. However, in the new UI, when the node is shutdown, I just could not hold myself to try
to find a link to the NM logs to figure out why. I think the workflow here changed slightly,
hence the user experience. Some other projects like Apache Ambari may want to maintain those
information as well, but in YARN, it will be great if we could provide our users a way out.
Maybe something like: "You have to ssh to the missing nodes' xxxx/xxx/ dir to look for the
logs" would even be helpful.
In old UI, we did not show anything if node was shutdown. So here, the change is that we are
showing even the nodes which have been SHUTDOWN. Just thought that this might be useful info
for the admin.
Now, some information regarding on which path, user can check the logs may be useful but currently
this information is not available in RM. I am not sure how NM can report this to RM. You can
report it in node registration but do we need to ?
Ambari may have this information because I guess it knows exactly where installation has been
done through it.

Regarding node labels, we can add it in REST response indicating if labels are enabled or
not. We can do this later because this would require another JIRA for REST changes.

500 error I think you are encountering on app page. I will fix it while doing AM pages or
as a separate JIRA.

> [YARN-3368] Add nodes page
> --------------------------
>                 Key: YARN-4517
>                 URL: https://issues.apache.org/jira/browse/YARN-4517
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: yarn
>            Reporter: Wangda Tan
>            Assignee: Varun Saxena
>              Labels: webui
>         Attachments: (21-Feb-2016)yarn-ui-screenshots.zip, Screenshot_after_4709.png,
Screenshot_after_4709_1.png, YARN-4517-YARN-3368.01.patch, YARN-4517-YARN-3368.02.patch
> We need nodes page added to next generation web UI, similar to existing RM/nodes page.

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