Chang Li created YARN-4218:
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Summary: 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
Reporter: Chang Li
Assignee: Chang Li
Attachments: YHADOOP-631.wip.patch
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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