Jian He commented on YARN-1664:

[~sseth], is this still needed ? how is Tez doing it now ?

> Add a utility to retrieve the RM Principal (renewer for tokens)
> ---------------------------------------------------------------
>                 Key: YARN-1664
>                 URL: https://issues.apache.org/jira/browse/YARN-1664
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Siddharth Seth
> Currently the logic to retrieve the renewer to be used while retrieving HDFS 
> tokens resides in MapReduce. This should ideally be a utility in YARN since 
> it's likely to be required by other applications as well.

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