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From "Anubhav Dhoot (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (YARN-3119) Memory limit check need not be enforced unless aggregate usage of all containers is near limit
Date Fri, 02 Jun 2017 16:38:04 GMT

     [ https://issues.apache.org/jira/browse/YARN-3119?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Anubhav Dhoot reassigned YARN-3119:
-----------------------------------

    Assignee:     (was: Anubhav Dhoot)

> Memory limit check need not be enforced unless aggregate usage of all containers is near
limit
> ----------------------------------------------------------------------------------------------
>
>                 Key: YARN-3119
>                 URL: https://issues.apache.org/jira/browse/YARN-3119
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: nodemanager
>            Reporter: Anubhav Dhoot
>         Attachments: YARN-3119.prelim.patch
>
>
> Today we kill any container preemptively even if the total usage of containers for that
is well within the limit for YARN. Instead if we enforce memory limit only if the total limit
of all containers is close to some configurable ratio of overall memory assigned to containers,
we can allow for flexibility in container memory usage without adverse effects. This is similar
in principle to how cgroups uses soft_limit_in_bytes.



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