Flavio Brasil created SPARK-22414:
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             Summary: Can't set driver env variables on yarn
                 Key: SPARK-22414
                 URL: https://issues.apache.org/jira/browse/SPARK-22414
             Project: Spark
          Issue Type: Bug
          Components: Deploy
    Affects Versions: 2.2.0
            Reporter: Flavio Brasil


We're trying to upgrade to 2.2.0 from 2.1.0 at Twitter but it seems that 
there's no way to set the JAVA_HOME for the driver running on the yarn am.

https://issues.apache.org/jira/browse/SPARK-17979 removed the environment 
variable SPARK_YARN_USER_ENV, but provided no alternative to set env variables 
for the driver since `spark.executorEnv` is only for executors.



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