[jira] [Commented] (YARN-4271) Make the NodeManager's health checker service pluggable

["Yufei Gu (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/YARN-4271?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15323440#comment-15323440 ] 

Yufei Gu commented on YARN-4271:
--------------------------------

Just to clarify, we make the {{DiskChecker}} instead of {{LocalDirsHandlerService}} pluggable in YARN-5137 and HADOOP-13254, then {{LocalDirsHandlerService}} get the ability to use different DiskChecker based on configuration. 

> Make the NodeManager's health checker service pluggable
> -------------------------------------------------------
>
>                 Key: YARN-4271
>                 URL: https://issues.apache.org/jira/browse/YARN-4271
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager
>            Reporter: Subru Krishnan
>            Assignee: Raghav Mohan
>            Priority: Minor
>
> This JIRA proposes making the NodeHealthCheckerService in the NM pluggable as in cloud environments like Azure we want to tap into the provided health checkers for disk and other service signal statuses. The idea is to extend the existing NodeHealthCheckerService and hook in custom implementation to evaluate if the node is healthy or not.



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