Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/3884#discussion_r23470546
--- Diff: python/pyspark/rdd.py ---
@@ -141,6 +141,17 @@ def id(self):
def __repr__(self):
return self._jrdd.toString()
+ def __getnewargs__(self):
+ # This method is called when attempting to pickle an RDD, which is
always an error:
+ raise Exception(
+ "It appears that you are attempting to broadcast an RDD or
reference an RDD from an "
+ "action or transforamtion. RDD transformations and actions can
only be invoked by the "
--- End diff --
typo: "transforamtion"
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