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https://issues.apache.org/jira/browse/YARN-2113?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15981830#comment-15981830
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Eric Payne commented on YARN-2113:
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[~sunilg],
It looks like
{{IntraQueueCandidatesSelector#initializeUsageAndUserLimitForCompute}} should
be cloning the used resources from leafqueue:
{code}
// Initialize used resource of a given user for rolling computation.
rollingResourceUsagePerUser.put(user,
- leafQueue.getUser(user).getResourceUsage().getUsed(partition));
+ Resources.clone(
+ leafQueue.getUser(user).getResourceUsage().getUsed(partition)));
if (LOG.isDebugEnabled()) {
LOG.debug("Rolling resource usage for user:" + user + " is : "
+ rollingResourceUsagePerUser.get(user));
{code}
> Add cross-user preemption within CapacityScheduler's leaf-queue
> ---------------------------------------------------------------
>
> Key: YARN-2113
> URL: https://issues.apache.org/jira/browse/YARN-2113
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: scheduler
> Reporter: Vinod Kumar Vavilapalli
> Assignee: Sunil G
> Attachments:
> TestNoIntraQueuePreemptionIfBelowUserLimitAndDifferentPrioritiesWithExtraUsers.txt,
> YARN-2113.0001.patch, YARN-2113.0002.patch, YARN-2113.0003.patch,
> YARN-2113.0004.patch, YARN-2113.0005.patch, YARN-2113.0006.patch,
> YARN-2113.0007.patch, YARN-2113.0008.patch, YARN-2113.0009.patch,
> YARN-2113.v0.patch
>
>
> Preemption today only works across queues and moves around resources across
> queues per demand and usage. We should also have user-level preemption within
> a queue, to balance capacity across users in a predictable manner.
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