Hadoop QA commented on YARN-1063:

{color:red}-1 overall{color}.  Here are the results of testing the latest 
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author 

    {color:red}-1 tests included{color}.  The patch doesn't appear to include 
any new or modified tests.
                        Please justify why no new tests are needed for this 
                        Also please list what manual steps were performed to 
verify this patch.

    {color:green}+1 javac{color}.  The applied patch does not increase the 
total number of javac compiler warnings.

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with 

    {color:green}+1 findbugs{color}.  The patch does not introduce any new 
Findbugs (version 1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase 
the total number of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in 

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: 
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/3606//console

This message is automatically generated.

> Winutils needs ability to create task as domain user
> ----------------------------------------------------
>                 Key: YARN-1063
>                 URL: https://issues.apache.org/jira/browse/YARN-1063
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager
>    Affects Versions: trunk-win
>         Environment: Windows
>            Reporter: Kyle Leckie
>              Labels: security
>             Fix For: trunk-win
>         Attachments: YARN-1063.patch
> h1. Summary:
> Securing a Hadoop cluster requires constructing some form of security 
> boundary around the processes executed in YARN containers. Isolation based on 
> Windows user isolation seems most feasible. This approach is similar to the 
> approach taken by the existing LinuxContainerExecutor. The current patch to 
> winutils.exe adds the ability to create a process as a domain user. 
> h1. Alternative Methods considered:
> h2. Process rights limited by security token restriction:
> On Windows access decisions are made by examining the security token of a 
> process. It is possible to spawn a process with a restricted security token. 
> Any of the rights granted by SIDs of the default token may be restricted. It 
> is possible to see this in action by examining the security tone of a 
> sandboxed process launch be a web browser. Typically the launched process 
> will have a fully restricted token and need to access machine resources 
> through a dedicated broker process that enforces a custom security policy. 
> This broker process mechanism would break compatibility with the typical 
> Hadoop container process. The Container process must be able to utilize 
> standard function calls for disk and network IO. I performed some work 
> looking at ways to ACL the local files to the specific launched without 
> granting rights to other processes launched on the same machine but found 
> this to be an overly complex solution. 
> h2. Relying on APP containers:
> Recent versions of windows have the ability to launch processes within an 
> isolated container. Application containers are supported for execution of 
> WinRT based executables. This method was ruled out due to the lack of 
> official support for standard windows APIs. At some point in the future 
> windows may support functionality similar to BSD jails or Linux containers, 
> at that point support for containers should be added.
> h1. Create As User Feature Description:
> h2. Usage:
> A new sub command was added to the set of task commands. Here is the syntax:
> winutils task createAsUser [TASKNAME] [USERNAME] [COMMAND_LINE]
> Some notes:
> * The username specified is in the format of "user@domain"
> * The machine executing this command must be joined to the domain of the user 
> specified
> * The domain controller must allow the account executing the command access 
> to the user information. For this join the account to the predefined group 
> labeled "Pre-Windows 2000 Compatible Access"
> * The account running the command must have several rights on the local 
> machine. These can be managed manually using secpol.msc: 
> ** "Act as part of the operating system" - SE_TCB_NAME
> ** "Replace a process-level token" - SE_ASSIGNPRIMARYTOKEN_NAME
> ** "Adjust memory quotas for a process" - SE_INCREASE_QUOTA_NAME
> * The launched process will not have rights to the desktop so will not be 
> able to display any information or create UI.
> * The launched process will have no network credentials. Any access of 
> network resources that requires domain authentication will fail.
> h2. Implementation:
> Winutils performs the following steps:
> # Enable the required privileges for the current process.
> # Register as a trusted process with the Local Security Authority (LSA).
> # Create a new logon for the user passed on the command line.
> # Load/Create a profile on the local machine for the new logon.
> # Create a new environment for the new logon.
> # Launch the new process in a job with the task name specified and using the 
> created logon.
> # Wait for the JOB to exit.
> h2. Future work:
> The following work was scoped out of this check in:
> * Support for non-domain users or machine that are not domain joined.
> * Support for privilege isolation by running the task launcher in a high 
> privilege service with access over an ACLed named pipe.

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