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https://issues.apache.org/jira/browse/YARN-4218?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15619394#comment-15619394
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Chang Li commented on YARN-4218:
--------------------------------
it seems patch generated by {code} git diff HEAD --no-prefix {code} is not
accepted by HADOOP QA? post again .trunk patch generated by {code} git diff
trunk {code}
> Metric for resource*time that was preempted
> -------------------------------------------
>
> Key: YARN-4218
> URL: https://issues.apache.org/jira/browse/YARN-4218
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Reporter: Chang Li
> Assignee: Chang Li
> Attachments: YARN-4218.2.patch, YARN-4218.2.patch, YARN-4218.2.patch,
> YARN-4218.2.patch, YARN-4218.3.patch, YARN-4218.4.patch, YARN-4218.patch,
> YARN-4218.trunk.patch, YARN-4218.wip.patch, screenshot-1.png,
> screenshot-2.png, screenshot-3.png
>
>
> After YARN-415 we have the ability to track the resource*time footprint of a
> job and preemption metrics shows how many containers were preempted on a job.
> However we don't have a metric showing the resource*time footprint cost of
> preemption. In other words, we know how many containers were preempted but we
> don't have a good measure of how much work was lost as a result of preemption.
> We should add this metric so we can analyze how much work preemption is
> costing on a grid and better track which jobs were heavily impacted by it. A
> job that has 100 containers preempted that only lasted a minute each and were
> very small is going to be less impacted than a job that only lost a single
> container but that container was huge and had been running for 3 days.
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