Satish Subhashrao Saley created OOZIE-2531:
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             Summary: 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


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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