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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