Marcelo Vanzin created SPARK-26194:
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             Summary: Support automatic spark.authenticate secret in Kubernetes 
backend
                 Key: SPARK-26194
                 URL: https://issues.apache.org/jira/browse/SPARK-26194
             Project: Spark
          Issue Type: Improvement
          Components: Kubernetes
    Affects Versions: 3.0.0
            Reporter: Marcelo Vanzin


Currently k8s inherits the default behavior for {{spark.authenticate}}, which 
is that the user must provide an auth secret.

k8s doesn't have that requirement and could instead generate its own unique 
per-app secret, and propagate it to executors.



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