Github user mgummelt commented on a diff in the pull request: https://github.com/apache/spark/pull/17665#discussion_r112570247 --- Diff: resource-managers/yarn/src/main/resources/META-INF/services/org.apache.spark.deploy.security.ServiceCredentialProvider --- @@ -0,0 +1,3 @@ +org.apache.spark.deploy.yarn.security.YARNHadoopFSCredentialProvider --- End diff -- Ah, yes. This is a problem. I'll write the unit test, and move the core META-INF to Mesos. I was hoping for a general set of registered providers, but I guess each scheduler will need to register their own.
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