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From "Eric Payne (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2113) Add cross-user preemption within CapacityScheduler's leaf-queue
Date Mon, 15 May 2017 21:43:04 GMT

    [ https://issues.apache.org/jira/browse/YARN-2113?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16011384#comment-16011384

Eric Payne commented on YARN-2113:

[~sunilg], the unit test was not failing for a couple of reasons. First, it was still using
the {{DefaultResourceCalculator}} even though the {{TestProportionalCapacityPreemptionPolicyIntraQueueWithDRF#setup}}
was setting {{rc}} to {{DominantResourceCalculator}}.

First, I think {{when(cs.getResourceCalculator()).thenReturn(rc);}} should be added
  public void setup() {
        CapacitySchedulerConfiguration.INTRAQUEUE_PREEMPTION_ENABLED, true);
    rc = new DominantResourceCalculator();
    policy = new ProportionalCapacityPreemptionPolicy(rmContext, cs, mClock);

Second, in each of the tests, {{String labelsConfig = "=100:50,true;";}} should be changed
to {{String labelsConfig = "=100:200,true;";}}

By making these changes, the tests will fail. If I comment out the {{when...thenReturn}},
the test succeeds again because it goes back to using the {{DefaultResourceCalculator}}

> 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: IntraQueue Preemption-Impact Analysis.pdf, 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-2113.0010.patch,
YARN-2113.0011.patch, YARN-2113.0012.patch, YARN-2113.0013.patch, YARN-2113.0014.patch, YARN-2113.0015.patch,
YARN-2113.0016.patch, YARN-2113.0017.patch, YARN-2113.apply.onto.0012.ericp.patch, YARN-2113
Intra-QueuePreemption Behavior.pdf, 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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