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https://issues.apache.org/jira/browse/YARN-451?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13802398#comment-13802398
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Sangjin Lee commented on YARN-451:
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{quote}
Quick question on the estimate – is it a calculation of the total app weight at
the start of the app or do the values decrease as containers are granted? The
former is useful as a gauge of how big an app is/was overall, while the latter
is more useful for identifying upcoming demands if the application has been
running for some time.
{quote}
What we envision and implemented in that patch is the total app weight (values
do not decrease as containers are granted). The rationale is to size a job
quickly (and compare sizes of jobs). The current patch piggybacks on the
allocate request so that apps may set the initial estimate but also update it
if the forecast changes and want to communicate that to the RM.
> Add more metrics to RM page
> ---------------------------
>
> Key: YARN-451
> URL: https://issues.apache.org/jira/browse/YARN-451
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: resourcemanager
> Affects Versions: 2.0.3-alpha
> Reporter: Lohit Vijayarenu
> Assignee: Sangjin Lee
> Priority: Blocker
> Attachments: in_progress_2x.png, yarn-451-trunk-20130916.1.patch
>
>
> ResourceManager webUI shows list of RUNNING applications, but it does not
> tell which applications are requesting more resource compared to others. With
> cluster running hundreds of applications at once it would be useful to have
> some kind of metric to show high-resource usage applications vs low-resource
> usage ones. At the minimum showing number of containers is good option.
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