vanzin commented on issue #23786: [SPARK-26877]Support user-level app staging directory in yarn mode when spark.yarn… URL: https://github.com/apache/spark/pull/23786#issuecomment-463667072 Have you tried used variable references in the config? e.g. `spark.yarn.stagingDir=/staging/${system:user.name}` I don't think `UGI.getUserName()` is easily references that way. but you could fix that instead.
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