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https://issues.apache.org/jira/browse/YARN-10449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17267824#comment-17267824
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Bilwa S T commented on YARN-10449:
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cc [~brahma] [~leftnoteasy] [~eyang]
> Flexing doesn't consider containers which were stopped
> ------------------------------------------------------
>
> Key: YARN-10449
> URL: https://issues.apache.org/jira/browse/YARN-10449
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Bilwa S T
> Assignee: Bilwa S T
> Priority: Major
>
> we have use case where if worker is idle for some period of time then user
> would want to shutdown the worker to release resource and request more
> workers when load is more.
> In case of ON_FAILURE retry policy if user gracefully shutdown worker its
> exit status will be 0 so container wont be relaunched. In this case
> if user try to flex up then it currently doesn't consider stopped containers
> which is not correct.
> i could think of two possible solutions:
> 1. Consider deducting succeeded containers from Number Of Containers and then
> clear succeeded component if flex up/down is done.
> 2. Consider updating number of containers when stopped
>
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