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From "Anubhav Dhoot (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-3119) Memory limit check need not be enforced unless aggregate usage of all containers is near limit
Date Fri, 30 Jan 2015 08:09:34 GMT
Anubhav Dhoot created YARN-3119:
-----------------------------------

             Summary: 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
            Reporter: Anubhav Dhoot


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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