Roland Johann created SPARK-28627:
-------------------------------------

             Summary: properties file via SPARK_CONF_DIR and --properties-file 
prevents definition of own properties via secrets/own mounts
                 Key: SPARK-28627
                 URL: https://issues.apache.org/jira/browse/SPARK-28627
             Project: Spark
          Issue Type: Bug
          Components: Kubernetes
    Affects Versions: 2.4.3
            Reporter: Roland Johann


K8S resource manager dumps the config map to 
/opt/spark/conf/spark-defaults.conf and passes it to spark submit twice:
* via env var SPARK_CONF_DIR
* argument --properties-file

This prevents definition if user defined properties, such as from secrets - 
currently it seems to be the only possibility to define spark config properties 
from secrets but is locked currently.

Is this implementation intent? If yes, what are the reasons behind this 
decision?



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