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https://issues.apache.org/jira/browse/YARN-2327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14120373#comment-14120373
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Colin Patrick McCabe commented on YARN-2327:
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bq. I'm not sure we should get into this. I would rely on the assumption that
NTP is properly configured, including authentication to avoid attacks there.
Do we document anywhere that you should use authentication with NTP? If not,
we should add that.
In any case, this JIRA is just about YARN warning about the problem, not about
changing auth (as far as I understand).
> YARN should warn about nodes with poor clock synchronization
> ------------------------------------------------------------
>
> Key: YARN-2327
> URL: https://issues.apache.org/jira/browse/YARN-2327
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Zhijie Shen
>
> YARN should warn about nodes with poor clock synchronization.
> YARN relies on approximate clock synchronization to report certain elapsed
> time statistics (see YARN-2251), but we currently don't warn if this
> assumption is violated.
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