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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