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Posted to yarn-issues@hadoop.apache.org by "Ray Chiang (JIRA)" <ji...@apache.org> on 2016/09/13 16:08:21 UTC

[jira] [Commented] (YARN-5644) Define exit code for allowing NodeManager health script to mar

    [ https://issues.apache.org/jira/browse/YARN-5644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15487612#comment-15487612 ] 

Ray Chiang commented on YARN-5644:
----------------------------------

[~aw] [~Naganarasimha], we can continue the discussion here.  I did my best to summarize the earlier discussion in the description here.  Thanks.

> 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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