Varun Saxena commented on YARN-3142:

Primarily converted synchronized methods to having code in methods inside RW 
locks. Bits of some methods can potentially be outside critical section but as 
I am not sure how much performance gain that would bring, I avoided adding 
multiple try-finally constructs in the same method, for the sake of simplicity.
Haven't added any fine grained locking.

> Improve locks in AppSchedulingInfo
> ----------------------------------
>                 Key: YARN-3142
>                 URL: https://issues.apache.org/jira/browse/YARN-3142
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager, scheduler
>            Reporter: Wangda Tan
>            Assignee: Varun Saxena
>         Attachments: YARN-3142.01.patch

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