Remus Rusanu commented on YARN-1972:

[~vinodkv] About the uniqueness of appid for localizer: it is not unique when 
multiple tasks are being localized for the same job, on the same node. Simply 
running pi with 100 splits on a 2 node cluster results in many duplicate 
errors. For task localization should be task_id, I believe.

> Implement secure Windows Container Executor
> -------------------------------------------
>                 Key: YARN-1972
>                 URL: https://issues.apache.org/jira/browse/YARN-1972
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: nodemanager
>            Reporter: Remus Rusanu
>            Assignee: Remus Rusanu
>              Labels: security, windows
>         Attachments: YARN-1972.1.patch
> This work item represents the Java side changes required to implement a 
> secure windows container executor, based on the YARN-1063 changes on 
> native/winutils side. 
> Necessary changes include leveraging the winutils task createas to launch the 
> container process as the required user and a secure localizer (launch 
> localization as a separate process running as the container user).

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