Github user pwendell commented on a diff in the pull request: https://github.com/apache/spark/pull/30#discussion_r11649970 --- Diff: python/pyspark/context.py --- @@ -130,6 +130,13 @@ def __init__(self, master=None, appName=None, sparkHome=None, pyFiles=None, varName = k[len("spark.executorEnv."):] self.environment[varName] = v + # Check if we're running on YARN: + if self.master == "yarn-client": + if not os.environ.get("SPARK_JAR"): --- End diff -- @sryza do we need to require this specifically for pyspark? I've proposed some changes in #299 that allow us to detect the jar automatically, so I don't think this is always necessary.
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