Ming Ma commented on YARN-1803:

Vinod, thanks for the great feedback. So to summarize it,

1. Add signalContainers method to both ApplicationClientProtocol and 
ContainerManagementProtocol to support ordered list.
2. stopContainers will be deprecated eventually.
3. MR needs be changed to call signalContainers instead of stopContainers.

For the SignalContainerCommand, I will update that in YARN-1897. We still need 
to define signalContainerRequest in addition to signalContainersRequest.

> Signal container support in nodemanager
> ---------------------------------------
>                 Key: YARN-1803
>                 URL: https://issues.apache.org/jira/browse/YARN-1803
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager
>            Reporter: Ming Ma
>            Assignee: Ming Ma
>         Attachments: YARN-1803.patch
> It could include the followings.
> 1. ContainerManager is able to process a new event type 
> ContainerManagerEventType.SIGNAL_CONTAINERS coming from NodeStatusUpdater and 
> deliver the request to ContainerExecutor.
> 2. Translate the platform independent signal command to Linux specific 
> signals. Windows support will be tracked by another task.

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