Github user Leemoonsoo commented on the pull request: https://github.com/apache/incubator-zeppelin/pull/640#issuecomment-172225220 @sejunra The docs/interpreter/spark.md supposed to have configurations for Spark Interpreter. And this document have instruction for configuring SparkInterpreter with Kerberos enabled yarn cluster. Not applied to any other interpreter nor Zeppelin server daemon. I think docs/interpreter/spark.md natural place to be. Then the duplication that this documents made (instruction for SPARK_HOME and HADOOP_CONF_DIR) also can be removed. And user can see all necessary information in a single place. It's up to you, but i suggest move it into docs/interpreter/spark.md or at least update doc to make it clear that the instruction is for only Spark interpreter.
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