Wangda Tan updated YARN-3265:
    Attachment: YARN-3265.2.patch

Attached patch addressed all comments from [~vinodkv]:

bq. It's very confusing that application-headroom gives the extra room apps 
have, but the one inside LeafQueue.QueueHeadroomInfo is overall allocation 
possible (including used resources). We should fix this
Renamed QueueHeadroomInfo to QueueResourceLimitInfo
Renamed queueMaxResource inside QueueHeadroomInfo to queueCurrentMaxLimit.

> CapacityScheduler deadlock when computing absolute max avail capacity (fix 
> for trunk/branch-2)
> ----------------------------------------------------------------------------------------------
>                 Key: YARN-3265
>                 URL: https://issues.apache.org/jira/browse/YARN-3265
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: capacityscheduler, resourcemanager
>            Reporter: Wangda Tan
>            Assignee: Wangda Tan
>            Priority: Blocker
>         Attachments: YARN-3265.1.patch, YARN-3265.2.patch
> This patch is trying to solve the same problem described in YARN-3251, but 
> this is a longer term fix for trunk and branch-2.

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