Github user mateiz commented on a diff in the pull request:
https://github.com/apache/spark/pull/1371#discussion_r15148140
--- Diff: python/pyspark/rdd.py ---
@@ -48,6 +48,35 @@
__all__ = ["RDD"]
+# TODO: for Python 3.3+, PYTHONHASHSEED should be reset to disable
randomized
+# hash for string
+def portable_hash(x):
+ """
+ This function returns consistant hash code for builtin types,
especially
+ for None and tuple with None.
+
+ The algrithm is similar to that one used by CPython 2.7
--- End diff --
My comment from before was deleted, but please add a link to where the
implementation is from, or a reference to the Python source code for this
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