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https://issues.apache.org/jira/browse/OOZIE-2531?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15283327#comment-15283327
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Robert Kanter commented on OOZIE-2531:
--------------------------------------

We've actually had this on our radar internally for a while.  Thanks for taking 
care of this [~satishsaley].  

I agree with [~rohini] that we should do hbase and hive tokens here.

I can't think of a case where the user would want either of these to be true, 
but users are very crafty and I'm sure one of them will come up with something 
:)
It's safest to just have the Action only add it if the user didn't explicitly 
set it.

> Prevent Spark trying for token which is already available 
> ----------------------------------------------------------
>
>                 Key: OOZIE-2531
>                 URL: https://issues.apache.org/jira/browse/OOZIE-2531
>             Project: Oozie
>          Issue Type: Improvement
>            Reporter: Satish Subhashrao Saley
>            Assignee: Satish Subhashrao Saley
>         Attachments: OOZIE-2531-1.patch
>
>
> As per [Apache Spark 
> documentation|http://spark.apache.org/docs/latest/running-on-yarn.html#spark-properties]
>  :
> The property {{spark.yarn.security.tokens.service.enabled}} in Apache Spark 
> which controls whether to retrieve delegation tokens for non-HDFS services 
> when security is enabled. By default, delegation tokens for all supported 
> services are retrieved when those services are configured, but it's possible 
> to disable that behavior if it somehow conflicts with the application being 
> run.
> Currently supported services are: hive, hbase 
> It would be good to have default as 
> {{spark.yarn.security.tokens.hive.enabled=false}} to avoid having Spark 
> redundantly retry obtaining a token when it already has one (passed 
> originally from Oozie's hcat credentials). 



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