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https://issues.apache.org/jira/browse/YARN-2888?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arun Suresh updated YARN-2888:
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Attachment: YARN-2888.009.patch
[~curino], Thought I had addressed that.. sorry..
I guess using round() is probably better at converting floating type to an
int/float. But I still need to downcast from long (which is the return type of
Math.round()) to int... which I think is fine (given I don't expect the value
to exceed MAX_INT)
Updated patch to do a Math.round()...
I plan to commit this after a sanity Jenkins run based on your +1
> 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
> Components: nodemanager, resourcemanager
> Reporter: Konstantinos Karanasos
> Assignee: Arun Suresh
> Attachments: YARN-2888-yarn-2877.001.patch,
> YARN-2888-yarn-2877.002.patch, YARN-2888.003.patch, YARN-2888.004.patch,
> YARN-2888.005.patch, YARN-2888.006.patch, YARN-2888.007.patch,
> YARN-2888.008.patch, YARN-2888.009.patch
>
>
> 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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