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https://issues.apache.org/jira/browse/YARN-7583?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Szilard Nemeth reassigned YARN-7583:
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Assignee: Szilard Nemeth
> Reduce overhead of container reacquisition
> ------------------------------------------
>
> Key: YARN-7583
> URL: https://issues.apache.org/jira/browse/YARN-7583
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: nodemanager
> Reporter: Jason Lowe
> Assignee: Szilard Nemeth
> Priority: Major
>
> When reacquiring containers after a nodemanager restart the Linux container
> executor invokes the container executor to essentially kill -0 the process to
> check if it is alive. It would be a lot cheaper on Linux to stat the
> /proc/<pid> directory which the nodemanager can do directly rather than pay
> for the fork-and-exec through the container executor and potential signal
> permission issues.
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