Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/15659#discussion_r85538940
--- Diff: python/setup.py ---
@@ -0,0 +1,170 @@
+#!/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.
+
+from __future__ import print_function
+import glob
+import os
+import sys
+from setuptools import setup, find_packages
+from shutil import copyfile, copytree, rmtree
+
+exec(open('pyspark/version.py').read())
+VERSION = __version__
+# A temporary path so we can access above the Python project root and
fetch scripts and jars we need
+TEMP_PATH = "deps"
+SPARK_HOME = os.path.abspath("../")
+JARS_PATH = "%s/assembly/target/scala-2.11/jars/" % SPARK_HOME
+
+# Use the release jars path if we are in release mode.
+if (os.path.isfile("../RELEASE") and
len(glob.glob("../jars/spark*core*.jar")) == 1):
+ JARS_PATH = "%s/jars/" % SPARK_HOME
+
+EXAMPLES_PATH = "%s/examples/src/main/python" % SPARK_HOME
+SCRIPTS_PATH = "%s/bin" % SPARK_HOME
+SCRIPTS_TARGET = "%s/bin" % TEMP_PATH
+JARS_TARGET = "%s/jars" % TEMP_PATH
+EXAMPLES_TARGET = "%s/examples" % TEMP_PATH
+
+if sys.version_info < (2, 7):
+ print("Python versions prior to 2.7 are not supported.",
file=sys.stderr)
+ exit(-1)
+
+# Check and see if we are under the spark path in which case we need to
build the symlink farm.
+# This is important because we only want to build the symlink farm while
under Spark otherwise we
+# want to use the symlink farm. And if the symlink farm exists under while
under Spark (e.g. a
+# partially built sdist) we should error and have the user sort it out.
+in_spark =
(os.path.isfile("../core/src/main/scala/org/apache/spark/SparkContext.scala") or
--- End diff --
So what is the difference between in_spark is true and false?
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