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https://issues.apache.org/jira/browse/YARN-2901?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Varun Vasudev updated YARN-2901:
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Attachment: apache-yarn-2901.4.patch
Uploaded a new patch with class marked as Private and Unstable.
> Add errors and warning stats to RM, NM web UI
> ---------------------------------------------
>
> Key: YARN-2901
> URL: https://issues.apache.org/jira/browse/YARN-2901
> Project: Hadoop YARN
> Issue Type: New Feature
> Components: nodemanager, resourcemanager
> Reporter: Varun Vasudev
> Assignee: Varun Vasudev
> Attachments: Exception collapsed.png, Exception expanded.jpg, Screen
> Shot 2015-03-19 at 7.40.02 PM.png, apache-yarn-2901.0.patch,
> apache-yarn-2901.1.patch, apache-yarn-2901.2.patch, apache-yarn-2901.3.patch,
> apache-yarn-2901.4.patch
>
>
> It would be really useful to have statistics on the number of errors and
> warnings in the RM and NM web UI. I'm thinking about -
> 1. The number of errors and warnings in the past 5 min/1 hour/12 hours/day
> 2. The top 'n'(20?) most common exceptions in the past 5 min/1 hour/12
> hours/day
> By errors and warnings I'm referring to the log level.
> I suspect we can probably achieve this by writing a custom appender?(I'm open
> to suggestions on alternate mechanisms for implementing this).
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