Github user alope107 commented on a diff in the pull request:
https://github.com/apache/spark/pull/8318#discussion_r37569058
--- Diff: python/pyspark/__init__.py ---
@@ -36,6 +36,31 @@
Finer-grained cache persistence levels.
"""
+import os
+import sys
+
+import xml.etree.ElementTree as ET
+
+if (os.environ.get("SPARK_HOME", "not found") == "not found"):
--- End diff --
One of the common use cases for pyspark without spark-submit is running
from a notebook environment. I think there is a decent number of people that do
this, and that more will once it's easier to do so.
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