Jian He updated YARN-1368:

    Attachment: YARN-1368.3.patch

Thanks Wangda for the review ! the new patch fixed the comments also.
bq. Should we change Resource(1024, 1) to its actually resource?
bq. For recoverContainersOnNode, is it possible NODE_ADDED happened before 
Not possible, APP_ADDED happens synchronously before ResourceTrackerService is 
bq. It may better to use two parameter assertEquals, because delta is 0
because they are two doubles. fixed the delta value to be 1e-8
bq. Why use split AMContainerCrashedTransition to two transitions and set their 
states to RUNNING/LAUNCHED differently.
To capture completed containers at RUNNING/LAUNCHED state and reuse the common 

> Common work to re-populate containers’ state into scheduler
> -----------------------------------------------------------
>                 Key: YARN-1368
>                 URL: https://issues.apache.org/jira/browse/YARN-1368
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Bikas Saha
>            Assignee: Jian He
>         Attachments: YARN-1368.1.patch, YARN-1368.2.patch, YARN-1368.3.patch, 
> YARN-1368.combined.001.patch, YARN-1368.preliminary.patch
> YARN-1367 adds support for the NM to tell the RM about all currently running 
> containers upon registration. The RM needs to send this information to the 
> schedulers along with the NODE_ADDED_EVENT so that the schedulers can recover 
> the current allocation state of the cluster.

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