Github user jerryshao commented on a diff in the pull request:
https://github.com/apache/spark/pull/20404#discussion_r164350171
--- Diff: python/pyspark/sql/session.py ---
@@ -760,6 +764,7 @@ def stop(self):
"""Stop the underlying :class:`SparkContext`.
"""
self._sc.stop()
+ self._jvm.SparkSession.clearDefaultSession()
--- End diff --
IIUC, since we already stop the jvm `SparkContext` with above line, it is
not necessary to keep it.
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