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https://issues.apache.org/jira/browse/MAPREDUCE-3050?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Joseph Evans updated MAPREDUCE-3050:
-------------------------------------------
Attachment: MR-3050.txt
This is the first draft of the patch. It is intended mostly for feedback on
the APIs that I am adding to YarnScheduler.
{code}
/**
* Get the Scheduler app for a given app attempt Id.
* @param appAttemptId the id of the application attempt
* @return SchedulerApp for this given attempt.
*/
@Private
@Stable
SchedulerApp getApplication(ApplicationAttemptId appAttemptId);
/**
* Get the root queue for the scheduler.
* @return the root queue for the scheduler.
*/
@Private
@Evolving
Queue getRootQueue();
{code}
ShedulerApp is changed to SchedulerAppImpl and a new interface ScheduelerApp is
created.
{code}
@Evolving
@LimitedPrivate("yarn")
public interface SchedulerApp {
public Collection<RMContainer> getLiveContainers();
public Collection<RMContainer> getReservedContainers();
public boolean isPending();
}
{code}
Any feedback on this is appreciated.
> YarnScheduler needs to expose Resource Usage Information
> --------------------------------------------------------
>
> Key: MAPREDUCE-3050
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3050
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: resourcemanager
> Affects Versions: 0.23.0, 0.24.0
> Reporter: Robert Joseph Evans
> Assignee: Robert Joseph Evans
> Priority: Blocker
> Fix For: 0.23.0, 0.24.0
>
> Attachments: MR-3050.txt
>
>
> Before the recent refactor The nodes had information in them about how much
> resources they were using. This information is not hidden inside
> SchedulerNode. Similarly resource usage information about an application, or
> in aggregate is only available through the Scheduler and there is not
> interface to pull it out.
> We need to expose APIs to get Resource and Container information from the
> scheduler, in aggregate across the entire cluster, per application, per node,
> and ideally also per queue if applicable (although there are no JIRAs I am
> aware of that need this right now).
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