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Posted to yarn-dev@hadoop.apache.org by "Konstantinos Karanasos (JIRA)" <ji...@apache.org> on 2014/11/20 20:51:34 UTC

[jira] [Created] (YARN-2888) Corrective mechanisms for rebalancing NM container queues

Konstantinos Karanasos created YARN-2888:
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             Summary: Corrective mechanisms for rebalancing NM container queues
                 Key: YARN-2888
                 URL: https://issues.apache.org/jira/browse/YARN-2888
             Project: Hadoop YARN
          Issue Type: Sub-task
            Reporter: Konstantinos Karanasos


Bad queuing decisions by the LocalRMs (e.g., due to the distributed nature of the scheduling decisions or due to having a stale image of the system) may lead to an imbalance in the waiting times of the NM container queues. This can in turn have an impact in job execution times and cluster utilization.
To this end, we introduce corrective mechanisms that may remove (whenever needed) container requests from overloaded queues, adding them to less-loaded ones.



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