Xuan Gong reassigned YARN-1974:

    Assignee: Xuan Gong  (was: Hong Zhiguo)

> add args for DistributedShell to specify a set of nodes on which the tasks run
> ------------------------------------------------------------------------------
>                 Key: YARN-1974
>                 URL: https://issues.apache.org/jira/browse/YARN-1974
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: applications/distributed-shell
>    Affects Versions: 2.7.0
>            Reporter: Hong Zhiguo
>            Assignee: Xuan Gong
>            Priority: Minor
>         Attachments: YARN-1974.1.patch, YARN-1974.patch
> It's very useful to execute a script on a specific set of machines for both 
> testing and maintenance purpose.
> The args "--nodes" and "--relax_locality" are added to DistributedShell. 
> Together with an unit test using miniCluster.
> It's also tested on our real cluster with Fair scheduler.

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