Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/30#discussion_r10410971
--- Diff: python/pyspark/java_gateway.py ---
@@ -66,3 +71,30 @@ def run(self):
java_import(gateway.jvm, "org.apache.spark.mllib.api.python.*")
java_import(gateway.jvm, "scala.Tuple2")
return gateway
+
+def set_env_vars_for_yarn(pyspark_zip):
+ if "SPARK_YARN_DIST_FILES" in os.environ:
+ os.environ["SPARK_YARN_DIST_FILES"] += ("," + pyspark_zip)
+ else:
+ os.environ["SPARK_YARN_DIST_FILES"] = pyspark_zip
+
+ # Add the pyspark zip to the python path
+ env_map = parse_env(os.environ.get("SPARK_YARN_USER_ENV", ""))
+ if "PYTHONPATH" in env_map:
+ env_map["PYTHONPATH"] += (":" + os.path.basename(pyspark_zip))
+ else:
+ env_map["PYTHONPATH"] = os.path.basename(pyspark_zip)
+
+ os.environ["SPARK_YARN_USER_ENV"] = ",".join(map(lambda v: v[0] + "="
+ v[1],
+ env_map.items()))
+
+def parse_env(env_str):
+ # Turns a comma-separated of env settings into a dict that maps env
vars to
+ # their values.
+ env = {}
+ for var_str in env_str.split(","):
+ parts = var_str.split("=")
+ if len(parts) == 2:
--- End diff --
Do you think it would be worth it to crash or throw an error when passed an
invalid env string?
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