Rohith updated YARN-1366:

    Attachment: YARN-1366.13.patch

Thanks Jian He and Bikas Saha for reviewing patch.
I updated patch with changes,please review
1. changed comment word in allocate(),  from ask list to container requests.
2. Removed AMCommand.Resync in AMRMClientAsyncImple.

test : 
3. Removed the test case correspond to AMRMcommand.Resync i.e 

> AM should implement Resync with the ApplicationMasterService instead of 
> shutting down
> -------------------------------------------------------------------------------------
>                 Key: YARN-1366
>                 URL: https://issues.apache.org/jira/browse/YARN-1366
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Bikas Saha
>            Assignee: Rohith
>         Attachments: YARN-1366.1.patch, YARN-1366.10.patch, 
> YARN-1366.11.patch, YARN-1366.12.patch, YARN-1366.13.patch, 
> YARN-1366.2.patch, YARN-1366.3.patch, YARN-1366.4.patch, YARN-1366.5.patch, 
> YARN-1366.6.patch, YARN-1366.7.patch, YARN-1366.8.patch, YARN-1366.9.patch, 
> YARN-1366.patch, YARN-1366.prototype.patch, YARN-1366.prototype.patch
> The ApplicationMasterService currently sends a resync response to which the 
> AM responds by shutting down. The AM behavior is expected to change to 
> calling resyncing with the RM. Resync means resetting the allocate RPC 
> sequence number to 0 and the AM should send its entire outstanding request to 
> the RM. Note that if the AM is making its first allocate call to the RM then 
> things should proceed like normal without needing a resync. The RM will 
> return all containers that have completed since the RM last synced with the 
> AM. Some container completions may be reported more than once.

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