[jira] [Updated] (YARN-6144) FairScheduler: preempted resources can become negative

["Karthik Kambatla (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/YARN-6144?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Karthik Kambatla updated YARN-6144:
-----------------------------------
    Summary: FairScheduler: preempted resources can become negative  (was: Fair share calculation error)

> FairScheduler: preempted resources can become negative
> ------------------------------------------------------
>
>                 Key: YARN-6144
>                 URL: https://issues.apache.org/jira/browse/YARN-6144
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: fairscheduler, resourcemanager
>    Affects Versions: 3.0.0-alpha2
>            Reporter: Miklos Szegedi
>            Assignee: Miklos Szegedi
>            Priority: Blocker
>         Attachments: Screen Shot 2017-02-02 at 12.49.14 PM.png, YARN-6144.000.patch, YARN-6144.001.patch
>
>
> {{preemptContainers()}} calls {{trackContainerForPreemption()}} to collect the list of containers and resources that were preempted for an application. Later the list is reduced when {{containerCompleted()}} calls {{untrackContainerForPreemption()}}. The bug is that the resource variable {{preemptedResources}} is subtracted, not just when the container was preempted but also when it has completed successfully. This causes that we return an incorrect value in {{getResourceUsage()}}.



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