[jira] [Updated] (YARN-8930) CGroup-based strict container memory enforcement does not work with CGroupElasticMemoryController

["Haibo Chen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/YARN-8930?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Haibo Chen updated YARN-8930:
-----------------------------
    Summary: CGroup-based strict container memory enforcement does not work with CGroupElasticMemoryController  (was: CGroup-based strict container memory management does not work with CGroupElasticMemoryController)

> CGroup-based strict container memory enforcement does not work with CGroupElasticMemoryController
> -------------------------------------------------------------------------------------------------
>
>                 Key: YARN-8930
>                 URL: https://issues.apache.org/jira/browse/YARN-8930
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 3.2.0
>            Reporter: Haibo Chen
>            Assignee: Haibo Chen
>            Priority: Major
>
> When yarn.nodemanger.resource.memory.enforced is set to true with memory cgroup turned on, (aka strict memory enforcement), containers monitor relies on the under_oom status read from the container cgroup's memory.oom_control file.
> However, when the root yarn container cgroup is under oom (e.g. when the node is overallocating iteself), the under_oom status is set for all yarn containers regardless of whether each individual container has run over its memory limit.
> What essentially happens is that whenever the root cgroup is under oom, all yarn containers are killed.



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