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https://issues.apache.org/jira/browse/YARN-2144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14033190#comment-14033190
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Jian He commented on YARN-2144:
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Haven't looked at the patch. YARN-1809 is adding the attempt UI, Maybe the app
UI should show the total preempted containers info, and attempt UI should show
each attempt's preempted containers info ?
> Add logs when preemption occurs
> -------------------------------
>
> Key: YARN-2144
> URL: https://issues.apache.org/jira/browse/YARN-2144
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: capacityscheduler
> Affects Versions: 2.5.0
> Reporter: Tassapol Athiapinya
> Assignee: Wangda Tan
> Attachments: AM-page-preemption-info.png, YARN-2144.patch,
> YARN-2144.patch, YARN-2144.patch
>
>
> There should be easy-to-read logs when preemption does occur.
> 1. For debugging purpose, RM should log this.
> 2. For administrative purpose, RM webpage should have a page to show recent
> preemption events.
> RM logs should have following properties:
> * Logs are retrievable when an application is still running and often flushed.
> * Can distinguish between AM container preemption and task container
> preemption with container ID shown.
> * Should be INFO level log.
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