helenyugithub commented on issue #25505: [SPARK-28776][ML] SparkML Writer gets hadoop conf from session state URL: https://github.com/apache/spark/pull/25505#issuecomment-523007466 Hi @srowen I believe the general convention is to use the session state's hadoop conf (see https://github.com/apache/spark/blob/39577a27a0b58fd75b41d24b10012447748b7ee9/examples/src/main/scala/org/apache/spark/examples/DFSReadWriteTest.scala#L115) . This also prevents correctness issues when multiple spark sessions are sharing the same context and they want to have their own hadoop conf (for example, that contains an authentication key that shouldn't be shared across users)
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