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Posted to yarn-dev@hadoop.apache.org by "Daniel Templeton (JIRA)" <ji...@apache.org> on 2016/03/13 16:41:33 UTC
[jira] [Resolved] (YARN-4801) ContainerMetrics drops records
[ https://issues.apache.org/jira/browse/YARN-4801?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Daniel Templeton resolved YARN-4801.
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Resolution: Duplicate
> ContainerMetrics drops records
> ------------------------------
>
> Key: YARN-4801
> URL: https://issues.apache.org/jira/browse/YARN-4801
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Affects Versions: 2.9.0
> Reporter: Daniel Templeton
> Assignee: Daniel Templeton
>
> The metrics2 system was implemented to deal with persistent sources. {{ContainerMetrics}} is an ephemeral source, and so it causes problems. Specifically, the {{ContainerMetrics}} only reports metrics once after the container has been stopped. This behavior is a problem because the metrics2 system can ask sources for reports that will be quietly dropped by the sinks that care. (It's a metrics2 feature, not a bug.) If that final report is silently dropped, it's lost, because the {{ContainerMetrics}} won't report anything else ever anymore.
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