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https://issues.apache.org/jira/browse/YARN-5644?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ray Chiang resolved YARN-5644.
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Resolution: Duplicate
> Define exit code for allowing NodeManager health script to mar
> --------------------------------------------------------------
>
> Key: YARN-5644
> URL: https://issues.apache.org/jira/browse/YARN-5644
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: nodemanager
> Affects Versions: 3.0.0-alpha2
> Reporter: Ray Chiang
> Assignee: Yufei Gu
> Labels: supportability
>
> Done as a alternate design to YARN-5567. Define a specific exit code for the
> health checker script (property yarn.nodemanager.health-checker.script.path)
> that allows the node to be blacklisted.
> As discussed in the latter part of YARN-5567, the current design requirements
> are:
> # Ignore all exit codes from the script
> ## _except_ the newly defined error code which will mark the NodeManager as
> UNHEALTHY
> ## This allows any syntax or functional errors in the script to be ignored
> # Upon failure (or multiple recorded failures):
> ## Store the status in the metrics2 state on the NodeManager
> ## Allow the RM to blacklist the NM or allow the jobs to drain
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