diff options
Diffstat (limited to 'python/pyspark/java_gateway.py')
| -rw-r--r-- | python/pyspark/java_gateway.py | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/python/pyspark/java_gateway.py b/python/pyspark/java_gateway.py index 6bb6c877c9..032d960e40 100644 --- a/python/pyspark/java_gateway.py +++ b/python/pyspark/java_gateway.py @@ -24,10 +24,11 @@ from threading import Thread from py4j.java_gateway import java_import, JavaGateway, GatewayClient -SPARK_HOME = os.environ["SPARK_HOME"] +def launch_gateway(): + SPARK_HOME = os.environ["SPARK_HOME"] + set_env_vars_for_yarn() -def launch_gateway(): # Launch the Py4j gateway using Spark's run command so that we pick up the # proper classpath and settings from spark-env.sh on_windows = platform.system() == "Windows" @@ -70,3 +71,27 @@ def launch_gateway(): java_import(gateway.jvm, "org.apache.spark.sql.hive.TestHiveContext") java_import(gateway.jvm, "scala.Tuple2") return gateway + +def set_env_vars_for_yarn(): + # Add the spark jar, which includes the pyspark files, to the python path + env_map = parse_env(os.environ.get("SPARK_YARN_USER_ENV", "")) + if "PYTHONPATH" in env_map: + env_map["PYTHONPATH"] += ":spark.jar" + else: + env_map["PYTHONPATH"] = "spark.jar" + + os.environ["SPARK_YARN_USER_ENV"] = ",".join(k + '=' + v for (k, v) in 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: + env[parts[0]] = parts[1] + elif len(var_str) > 0: + print "Invalid entry in SPARK_YARN_USER_ENV: " + var_str + sys.exit(1) + + return env |