spark-instrumented-optimizer/python/pyspark/find_spark_home.py
Benjamin Peterson 7013eea11c [SPARK-23522][PYTHON] always use sys.exit over builtin exit
The exit() builtin is only for interactive use. applications should use sys.exit().

## What changes were proposed in this pull request?

All usage of the builtin `exit()` function is replaced by `sys.exit()`.

## How was this patch tested?

I ran `python/run-tests`.

Please review http://spark.apache.org/contributing.html before opening a pull request.

Author: Benjamin Peterson <benjamin@python.org>

Closes #20682 from benjaminp/sys-exit.
2018-03-08 20:38:34 +09:00

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2.7 KiB
Python
Executable file

#!/usr/bin/env python
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# This script attempt to determine the correct setting for SPARK_HOME given
# that Spark may have been installed on the system with pip.
from __future__ import print_function
import os
import sys
def _find_spark_home():
"""Find the SPARK_HOME."""
# If the enviroment has SPARK_HOME set trust it.
if "SPARK_HOME" in os.environ:
return os.environ["SPARK_HOME"]
def is_spark_home(path):
"""Takes a path and returns true if the provided path could be a reasonable SPARK_HOME"""
return (os.path.isfile(os.path.join(path, "bin/spark-submit")) and
(os.path.isdir(os.path.join(path, "jars")) or
os.path.isdir(os.path.join(path, "assembly"))))
paths = ["../", os.path.dirname(os.path.realpath(__file__))]
# Add the path of the PySpark module if it exists
if sys.version < "3":
import imp
try:
module_home = imp.find_module("pyspark")[1]
paths.append(module_home)
# If we are installed in edit mode also look two dirs up
paths.append(os.path.join(module_home, "../../"))
except ImportError:
# Not pip installed no worries
pass
else:
from importlib.util import find_spec
try:
module_home = os.path.dirname(find_spec("pyspark").origin)
paths.append(module_home)
# If we are installed in edit mode also look two dirs up
paths.append(os.path.join(module_home, "../../"))
except ImportError:
# Not pip installed no worries
pass
# Normalize the paths
paths = [os.path.abspath(p) for p in paths]
try:
return next(path for path in paths if is_spark_home(path))
except StopIteration:
print("Could not find valid SPARK_HOME while searching {0}".format(paths), file=sys.stderr)
sys.exit(-1)
if __name__ == "__main__":
print(_find_spark_home())