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From "MENG DING (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4519) potential deadlock of CapacityScheduler between decrease container and assign containers
Date Mon, 11 Jan 2016 15:14:39 GMT

    [ https://issues.apache.org/jira/browse/YARN-4519?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15092054#comment-15092054
] 

MENG DING commented on YARN-4519:
---------------------------------

The JavaDoc and unit tests error are not related to this issue.

> potential deadlock of CapacityScheduler between decrease container and assign containers
> ----------------------------------------------------------------------------------------
>
>                 Key: YARN-4519
>                 URL: https://issues.apache.org/jira/browse/YARN-4519
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacityscheduler
>            Reporter: sandflee
>            Assignee: MENG DING
>         Attachments: YARN-4519.1.patch, YARN-4519.2.patch
>
>
> In CapacityScheduler.allocate() , first get FiCaSchedulerApp sync lock, and may be get
CapacityScheduler's sync lock in decreaseContainer()
> In scheduler thread,  first get CapacityScheduler's sync lock in allocateContainersToNode(),
and may get FiCaSchedulerApp sync lock in FicaSchedulerApp.assignContainers(). 



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