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https://issues.apache.org/jira/browse/SPARK-13148?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Loughran updated SPARK-13148:
-----------------------------------
    Summary: support zero-keytab Oozie application launch via 
HADOOP_TOKEN_FILE_LOCATION env var  (was: support zero-keytab Oozie application 
launch on a secure cluster )

> support zero-keytab Oozie application launch via HADOOP_TOKEN_FILE_LOCATION 
> env var
> -----------------------------------------------------------------------------------
>
>                 Key: SPARK-13148
>                 URL: https://issues.apache.org/jira/browse/SPARK-13148
>             Project: Spark
>          Issue Type: New Feature
>          Components: YARN
>    Affects Versions: 1.6.0
>         Environment: YARN cluster with Kerberos enabled, launched from Oozie 
> —where Oozie passes down the delegation tokens
>            Reporter: Steve Loughran
>
> Oozie can launch Spark instances on insecure clusters, and on a secure 
> cluster if Oozie is set up to provide a keytab.
> What it cannot currently do is launch a Spark application on a YARN cluster 
> without a keytab. In this situation, Oozie collects the delegation tokens it 
> is setup to collect (as a superuser in the cluster), saves them to a file, 
> then points to the file in the `HADOOP_TOKEN_FILE_LOCATION` environment 
> variable.
> These tokens need to be used to launch the application —rather than try to 
> get some more



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